# General Intelligence and Reasoning MCQ (Multiple Choice Questions) - SchoolingAxis

Que- 2, 8, 14, 20, 26, 32, 38, ... choose which pair of numbers comes next?

a. 2, 46

b. 44, 50

c. 42, 48

d. 40, 42

Explanation-   This is a simple addition series, which begins with 2 and adds 6.

Que- 9, 11, 33, 13, 15, 33, 17, ... choose which pair of numbers comes next?

a. 19, 33

b. 33, 35

c. 33, 19

d. 15, 33

Explanation-   In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.

Que- 2, 3, 4, 5, 6, 4, 8, ... choose which pair of numbers comes next?

a. 9, 10

b. 4, 8

c. 10, 4

d. 9, 4

Explanation-   This is an alternating addition series with a random number, 4, interpolated as every third number. In the main series, 1 is added, then 2 is added, then 1, then 2, and so on.

Que- 17, 17, 34, 20, 20, 31, 23, ... choose which pair of numbers comes next?

a. 26, 23

b. 34, 20

c. 23, 33

d. 23, 28

Explanation-   This is an alternating subtraction series with repetition. There are two different patterns here. In the first, a number repeats itself; then 3 is added to that number to arrive at the next number, which also repeats. This gives the series 17, 17, 20, 20, 23, and so on. Every third number follows a second pattern, in which 3 is subtracted from each number to arrive at the next: 34, 31, 28.

Que- 6, 20, 8, 14, 10, 8, 12, ... choose which pair of numbers comes next?

a. 14, 10

b. 2, 18

c. 4, 12

d. 2, 14

Explanation-   This is an alternating addition and subtraction series. In the first pattern, 2 is added to each number to arrive at the next; in the alternate pattern, 6 is subtracted from each number to arrive at the next.

Que- 21, 25, 18, 29, 33, 18, ... choose which pair of numbers comes next?

a. 43, 18

b. 41, 44

c. 37, 18

d. 37, 41

Explanation-   This is a simple addition series with a random number, 18, interpolated as every third number. In the series, 4 is added to each number except 18, to arrive at the next number.

Que- 75, 65, 85, 55, 45, 85, 35, ... choose which pair of numbers comes next?

a. 25, 15

b. 25, 85

c. 35, 25

d. 85, 35

Explanation-   This is a simple subtraction series in which a random number, 85, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.

Que- 11, 16, 21, 26, 31, 36, 41, ... choose which pair of numbers comes next?

a. 47, 52

b. 46, 52

c. 45, 49

d. 46, 51

Explanation-   In this simple addition series, each number is 5 more than the previous number.

Que- 3, 8, 13, 18, 23, 28, 33, ... choose which pair of numbers comes next?

a. 39, 44

b. 38, 44

c. 38, 43

d. 37, 42

Explanation-   In this simple addition series, each number is 5 greater than the previous number.

Que- 84, 78, 72, 66, 60, 54, 48, ... choose which pair of numbers comes next?

a. 44, 34

b. 42, 36

c. 42, 32

d. 40, 34

Explanation-   In this simple subtraction series, each number is 6 less than the previous number.

Que- 61, 57, 50, 61, 43, 36, 61, ... choose which pair of numbers comes next?

a. 29, 61

b. 27, 20

c. 31, 61

d. 29, 22

Explanation-   This is an alternating repetition series, in which a random number, 61, is interpolated as every third number into an otherwise simple subtraction series. Starting with the second number, 57, each number (except 61) is 7 less than the previous number.

Que- 4, 8, 22, 12, 16, 22, 20, 24, ... choose which pair of numbers comes next?

a. 28, 32

b. 28, 22

c. 22, 28

d. 32, 36

Explanation-   This is an alternating repetition series, with a random number, 22, interpolated as every third number into an otherwise simple addition series. In the addition series, 4 is added to each number to arrive at the next number.

Que- 40, 40, 31, 31, 22, 22, 13, ... choose which pair of numbers comes next?

a. 13, 4

b. 13, 5

c. 4, 13

d. 9, 4

Explanation-   This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.

Que- 1, 10, 7, 20, 13, 30, 19, ... choose which pair of numbers comes next?

a. 26, 40

b. 29, 36

c. 40, 25

d. 25, 31

Explanation-   Here, every other number follows a different pattern. In the first series, 6 is added to each number to arrive at the next. In the second series, 10 is added to each number to arrive at the next.

Que- 10, 20, 25, 35, 40, 50, 55, ... choose which pair of numbers comes next?

a. 70, 65

b. 60, 70

c. 60, 75

d. 65, 70

Explanation-   This is an alternating addition series, in which 10 is added, then 5, then 10, and so on.

Que- 42, 40, 38, 35, 33, 31, 28, ... choose which pair of numbers comes next?

a. 25, 22

b. 26, 23

c. 26, 24

d. 25, 23

Explanation-   This is an alternating subtraction series in which 2 is subtracted twice, then 3 is subtracted once, then 2 is subtracted twice, and so on.

Que- 6, 10, 14, 18, 22, 26, 30, ... choose which pair of numbers comes next?

a. 36, 40

b. 33, 37

c. 38, 42

d. 34, 38

Explanation-   This simple addition series adds 4 to each number to arrive at the next.

Que- 8, 12, 9, 13, 10, 14, 11, ... choose which pair of numbers comes next?

a. 14, 11

b. 15, 12

c. 8, 15

d. 15, 19

Explanation-   This is an alternating addition and subtraction series, in which the addition of 4 is alternated with the subtraction of 3.

Que- 3, 5, 35, 10, 12, 35, 17, ... choose which pair of numbers comes next?

a. 22, 35

b. 35, 19

c. 19, 35

d. 19, 24

Explanation-   This is an alternating addition series, with a random  number, 35, interpolated as every third number. The pattern of addition is to add 2, add 5, add 2, and so on. The number 35 comes after each ""add 2"" step/

Que- 13, 29, 15, 26, 17, 23, 19, ... choose which pair of numbers comes next?

a. 21, 23

b. 20, 21

c. 20, 17

d. 25, 27

Explanation-   Here, there are two alternating patterns, with every other number following a different pattern. The first pattern begins with 13 and adds 2 to each number to arrive at the next; the alternating pattern begins  with 29 and subtracts 3 each time.

Que- 14, 14, 26, 26, 38, 38, 50, ... choose which pair of numbers comes next?

a. 60, 72

b. 50, 62

c. 50, 72

d. 62, 62

Explanation-   In this simple addition with repetition series, each number in the series repeats itself, and then increases by 12 to arrive at the next number.

Que- 44, 41, 38, 35, 32, 29, 26, ... choose which pair of numbers comes next?

a. 24, 21

b. 22, 19

c. 23, 19

d. 23, 20

Explanation-   This is a simple subtraction series, in which 3 is subtracted from each number to arrive at the next.

Que- 34, 30, 26, 22, 18, 14, 10, ... choose which pair of numbers comes next?

a. 8, 6

b. 6, 4

c. 14, 18

d. 6, 2

Explanation-   This is a simple subtraction series, in which 4 is subtracted from each number to arrive at the next.

Que- 32, 31, 32, 29, 32, 27, 32, ... choose which pair of numbers comes next?

a. 25, 32

b. 31, 32

c. 29, 32

d. 25, 30

Explanation-   This is an alternating repetition series. The number 32 alternates with a series in which each number decreases by 2.

Que- 7, 9, 66, 12, 14, 66, 17, ... choose which pair of numbers comes next?

a. 19, 66

b. 66, 19

c. 19, 22

d. 20, 66

Explanation-   This is an alternating addition series with repetition, in which a random number, 66, is interpolated as every third number. The regular series adds 2, then 3, then 2, and so on, with 66 repeated after each ""add 2"" step.

Que- 3, 8, 10, 15, 17, 22, 24, ... choose which pair of numbers comes next?

a. 26, 28

b. 29, 34

c. 29, 31

d. 26, 31

Explanation-   This is an alternating addition series that adds 5, then 2, then 5, and so on.

Que- 32, 29, 26, 23, 20, 17, 14, ... choose which pair of numbers comes next?

a. 11, 8

b. 12, 8

c. 11, 7

d. 32, 29

Explanation-   In this simple subtraction series, the numbers decrease by 3.

Que- 16, 26, 56, 36, 46, 68, 56, ... choose which pair of numbers comes next?

a. 80, 66

b. 64, 82

c. 66, 80

d. 78, 68

Explanation-   Here, every third number follows a different pattern from the main series. In the main series, beginning with 16, 10 is added to each number to arrive at the next. In the alternating series, beginning with 56, 12 is added to each number to arrive at the next.

Que- 2, 44, 4, 41, 6, 38, 8, ... choose which pair of numbers comes next?

a. 10, 12

b. 35, 32

c. 34, 9

d. 35, 10

Explanation-   Here, there are two alternating patterns, one addition and one subtraction. The first starts with 2 and increases by 2; the second starts with 44 and decreases by 3.

Que- 17, 32, 19, 29, 21, 26, 23, ... choose which pair of numbers comes next?

a. 25, 25

b. 20, 22

c. 23, 25

d. 25, 22

Explanation-   Here, there are two alternating patterns. The first begins with 17 and adds 2; the second begins with 32 and subtracts 3.

Que- 17, 14, 14, 11, 11, 8, 8, ... choose which pair of numbers comes next?

a. 8, 5

b. 5, 2

c. 8, 2

d. 5, 5

Explanation-   This is a simple addition series with repetition. It subtracted 3 to each number to arrive at the next, which is repeated before 3 is subtracted again.

Que- 10, 34, 12, 31, 14, 28, 16, ... choose which pair of numbers comes next?

a. 25, 18

b. 30, 13

c. 19, 26

d. 18, 20

Explanation-   Two patterns alternate here. The first pattern begins with 10 and adds 2 to each number to arrive at the next; the alternating pattern begins with 34 and subtracts 3 each time.

Que- 11, 14, 14, 17, 17, 20, 20, ... choose which pair of numbers comes next?

a. 23, 23

b. 23, 26

c. 21, 24

d. 24, 24

Explanation-   This is a simple addition series with repetition. It adds 3 to each number to arrive at the next, which is repeated before 3 is added again.

Que- F2, __, D8, C16, B32 What number should fill the blank?

a. A16

b. G4

c. E4

d. E3

Explanation-   The letters decrease by 1; the numbers are multiplied by 2.

Que- V, VIII, XI, XIV, __, XX. What number should fill the blank?

a. IX

b. XXIII

c. XV

d. XVII

Explanation-   This is a simple addition series; each number is 3 more than the previous number.

Que- 70, 71, 76, __, 81, 86, 70, 91. What number should fill the blank?

a. 70

b. 71

c. 80

d. 96

Explanation-   In this series, 5 is added to the previous number; the number 70 is inserted as every third number.

Que- 8, 43, 11, 41, __, 39, 17. What number should fill in the blank?

a. 8

b. 14

c. 43

d. 44

Explanation-   This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and  subtracts 2.

Que- VI, 10, V, 11, __, 12, III. What number should fill the blank?

a. II

b. IV

c. IX

d. None

Explanation-   This is an alternating addition and subtraction series. Roman numbers alternate with Arabic numbers. In the Roman numeral pattern, each number decreases by 1. In the Arabic numeral pattern, each number increases by 1.

Que- (1/9), (1/3), 1, ____ , 9. What number should fill the blank?

a. (2/3)

b. 3

c. 6

d. 27

Explanation-   This is a multiplication series; each number is 3 times the previous number.

Que- 83, 73, 93, 63, __, 93, 43. What number should fill the blank?

a. 33

b. 53

c. 73

d. 93

Explanation-   This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.

Que- 72, 76, 73, 77, 74, __, 75. What number should fill the blank?

a. 70

b. 71

c. 75

d. 78

Explanation-   This series alternates the addition of 4 with the subtraction of 3.

Que- J14, L16, __, P20, R22. What number should fill the blank?

a. S24

b. N18

c. M18

d. T24

Explanation-   In this series, the letters progress by 2, and the numbers increase by 2.

Que- 4, 7, 25, 10, __, 20, 16, 19. What number should fill the blank?

a. 13

b. 15

c. 20

d. 28

Explanation-   Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.

Que- XXIV, XX, __, XII, VIII. What number should fill the blank?

a. XXII

b. XIII

c. XVI

d. IV

Explanation-   This is a simple subtraction series; each number is 4 less than the previous number.

Que- 0.15, 0.3, ____, 1.2, 2.4. What number should fill the blank?

a. 4.8

b. 0.006

c. 0.6

d. 0.9

Explanation-   This is a simple multiplication series. Each number is 2 times greater than the previous number.

Que- U32, V29, __, X23, Y20. What number should fill the blank?

a. W26

b. W17

c. Z17

d. Z26

Explanation-   In this series, the letters progress by 1; the numbers decrease by 3.

Que- Find the missing number: 3, 7, 15 ,?, 63 ,127

a. 30

b. 31

c. 47

d. 52

Explanation-   Each number in the series is one more than twice the preceding number. So, the missing term = (15 x 2) + 1 = 31

Que- Find the missing term: 4 ,7, 12, 19, 28, ?

a. 30

b. 36

c. 39

d. 49

Explanation-   The pattern is +3,+5,+7,+9,............ So, missing term=(28+11)=39

Que- Find the missing term: 4, 10, ?, 82, 244, 730

a. 24

b. 28

c. 77

d. 218

Explanation-   Each number in the series is 2 less than thrice the preceding number. So, missing number = (10 x 3) - 2 = 28

Que- Find the missing term: 11, 13, 17, 19, 23, 25, ?

a. 26

b. 27

c. 29

d. 37

Explanation-   The pattern is +2,+4,+2,+4, So, missing term = 25 + 4 = 29

Que- Find the missing term: 6, 13, 25, 51, 101. ?

a. 201

b. 202

c. 203

d. 205

Explanation-   The pattern is x2+1,x2-1,x2+1,x2-1.x................... So, missing term =101x2+1=203

Que- Find the missing term: 6, 12, 21, ?, 48

a. 33

b. 38

c. 40

d. 45

Explanation-   The pattern is +6, +9, +12, +15............... So, missing term=21+12=33

Que- Find the missing term: 8, 28, 116, 584 , ?

a. 1752

b. 3502

c. 3504

d. 3508

Explanation-   The pattern is x3+4, x4+4, x5+4,............... So, missing term=584x6+4=3508

Que- Find the missing term: 2, 5, 9, ?, 20, 27

a. 14

b. 16

c. 18

d. 24

Explanation-   The pattern is +3, +4, +5, +6,........ So, missing term=9+5=14

Que- Find the missing term: 6, 11, 21, 36, 56, ?

a. 42

b. 51

c. 81

d. 91

Explanation-   The pattern is +5, +10, +15, +20,........ So, missing term=56+25=81

Que- Find the missing term: 3, 7, 23, 95, ?

a. 62

b. 128

c. 479

d. 575

Explanation-   The pattern is × 2+1, × 3+2, × 4+3....... So, missing term= 95 × 5 + 4 = 479

Que- Find the missing term: 10, 18, 28, 40, 54, 70, ?

a. 85

b. 86

c. 87

d. 88

Explanation-   The pattern is +8, +10, +12, +14,........ So, missing term=70+18=88

Que- Find the missing term: 2, 7, 27, 107, 427, ?

a. 1262

b. 1707

c. 4027

d. 4207

Explanation-   The pattern is +5, +20, +80, +320 i.e. +(5 × 12 ), +(5 × 22 ), +(5 × 42 ), +(5 × 82 ) So, missing term = 427 + +(5 × 162 ) = 427 +1280 = 1707

Que- Find the missing term: 120, 99, 80, 63, 48, ?

a. 35

b. 38

c. 39

d. 40

Explanation-   The pattern is -21, -19, -17, -15, . . . . . . . .  So, missing term = 48 - 13 = 35

Que- Find the missing term: 2, 3, 8, 27, 112, ?

a. 226

b. 339

c. 452

d. 565

Explanation-   The pattern is ×1 + 1, × 2 + 2, × 3 + 3, × 4 + 4...........  So, the missing term = 112 × 5 + 5 = 565

Que- Find the missing term: 22, 24, 28, ?, 52, 84

a. 36

b. 38

c. 42

d. 46

Explanation-   The pattern is + 2, + 4, + 8, +16,............   So, the missing term = 28 + 8 = 36

Que- Find the missing term: 1, 5, 14, 30, 55, 91,?

a. 130

b. 140

c. 150

d. None

Explanation-   The pattern is + 4, + 9, + 6, + 25, + 36,........i.e.,+ 22 ,+ 32 + 42 + 52 + 62 .........  So, the missing term = 91 + 72 = 91+ 49 = 140

Que- Find the missing term: 4832, 5840, 6848, ?

a. 7815

b. 7846

c. 7856

d. 7887

Explanation-   The pattern is + 1008.  So, the missing term = 6848 + 1008 = 7856.

Que- Find the missing term: 10, 100, 200, 310. ?

a. 400

b. 410

c. 420

d. 430

Explanation-   The pattern is + 90, + 100, + 110......   So, the missing term = 310 + 120 = 430

Que- Find the missing term: 2, 2, 5, 13, 28, ?

a. 49

b. 50

c. 51

d. 52

Explanation-   The pattern is + 0, + 3, + 8, + 15,.............i.e.,+ (12 - 1) , + (22 - 1), + (32 - 1), + (42 - 1),................ So, the missing term = 28 + (52 - 1) = 28 + 24 = 52

Que- Find the missing term:  0, 2, 8, 14, ?, 34

a. 20

b. 23

c. 24

d. 25

Explanation-   The pattern is + 2, + 6, + 6, + 10, +10,.....  So, the missing term = 14 + 10 =24

Que- Find the missing term: 24, 60, 120, 210, ?

a. 300

b. 336

c. 420

d. 525

Explanation-   The pattern is +36, +60, +90, . . . . . . i.e., +[6 × (6 + 0)], + [6 × (6 + 4)], + [6 × (6 + 9)] . . . . . .  So, the missing term = 210 + [6 × (6 + 15)] = 210 +126 = 336

Que- Find the missing term: 28, 33, 31, 36, ?, 39

a. 32

b. 34

c. 38

d. 40

Explanation-   The pattern is + 5, - 2, + 5, - 2,........   So, missing term = 36 - 2 = 34

Que- Find the missing term: 5760, 960, ?, 48, 48, 16, 8

a. 120

b. 160

c. 192

d. 240

Explanation-   The pattern is  ÷ 6, ÷ 5, ÷ 4, ÷ 3, ÷ 2  So, missing term = 960 ÷ 5= 192

Que- Find the missing term: 125, 80, 45, 20, ?

a. 5

b. 8

c. 10

d. None

Explanation-   The pattern is - 45, - 35, - 25,........   So, missing term = 20 - 15 = 5

Que- Find the missing term: 1, 2, 6, 7, 21, 22, 66, 67, ?

a. 70

b. 134

c. 201

d. 301

Explanation-   The pattern is  + 1, × 3, + 1, × 3, + 1, × 3, + 1,.............  So, missing term = 67 × 3 = 201

Que- Find the missing term: 1, 5, 13, 25, 41, ?

a. 51

b. 57

c. 61

d. 63

Explanation-   The pattern is  + 4, + 8, + 12, + 16,..........  So, missing term = 41 + 20 = 61

Que- Find the missing term: 48, 24, 96, 48, 192, ?

a. 76

b. 90

c. 96

d. 98

Explanation-   The pattern is ÷ 2, × 4, ÷ 2, × 4,...........   So, missing term = 192 ÷ 2 = 96

Que- Find the missing term:  1, 2, 3, 6, 9, 18, ?, 54

a. 18

b. 27

c. 36

d. 81

Explanation-   The pattern is  × 2, × 3/2, × 2, × 3/2, × 2,............. So, missing term = 18 × 3/2 = 27

Que- Find the missing term:  6, 17, 39, 72, ?

a. 83

b. 94

c. 116

d. None

Explanation-   The pattern is  + 11, + 22, + 33,..............  So, missing term = 72 + 44 = 116

Que- Find the missing term:  66, 36, 18, ?

a. 3

b. 6

c. 8

d. 9

Explanation-   Each term in the series is the product of the digits of the preceding term. So, missing term = 1 × 8 = 8

Que- Find the missing term: 325, 259, 204, 160, 127, 105, ?

a. 94

b. 96

c. 98

d. None

Explanation-   The pattern is - 66, - 55, - 44, -33, - 22,...............   So, missing term = 105 - 11 = 94

Que- Find the missing term:  165, 195, 255, 285, 345, ?

a. 375

b. 390

c. 420

d. 435

Explanation-   Each number of the series is 15 multiplied by a prime number i.e., 15 × 11, 15 × 13, 15 × 17, 15 × 19, 15 × 23,..............  So, missing term = 15 × 29 = 435

Que- Find the missing term:  1, 4, 10, 22, 46, ?

a. 64

b. 86

c. 94

d. None

Explanation-   The pattern is  + 3, + 6, + 12, + 24,.............  So, missing term = 46 + 48 = 94

Que- Find the missing term:  3, 12, 27, 48, 75, 108, ?

a. 147

b. 162

c. 183

d. None

Explanation-   The terms of the given series are  3 × 12 , 3 × 22 , 3 × 32 , 3 × 42 , 3 × 52 , 3 × 62 ,...............  So, missing term = 3 ×72  = 3 × 49 =147

Que- Find the missing term: 7, 26, 63, 124, 215, 342, ?

a. 391

b. 421

c. 481

d. 511

Explanation-   The terms of the given series are (23 - 1), (33  - 1), (43 - 1 ), (53 - 1), (63 - 1), (73 - 1),.......... So, missing term = (83 - 1) = (512 - 1) = 511.

Que- Find the missing term:  9, 27, 31, 155, 161, 1127, ?

a. 316

b. 1135

c. 1288

d. 2254

Explanation-   The pattern is  × 3, + 4, × 5, + 6, × 7,  So, missing term = 1127 + 8 =1135

Que- Find the missing term:  5, 6, 9, 15, ?, 40

a. 21

b. 25

c. 27

d. 33

Explanation-   The pattern is + 1, + 3, + 6, ............i.e., + 1, + (1 + 2) + (1 + 2 + 3)...............  So, missing term = 15 + (1 + 2 +3 +4) = 25

Que- Find the missing term :-  3, 15, ?, 63, 99, 143

a. 27

b. 35

c. 45

d. 56

Explanation-   The terms of the given series are (22 - 1), (42 - 1),................,(82 - 1), (102 - 1), (122 - 1) So, missing term = (62  - 1) = (36 - 1) = 35

Que- Find the missing term:  2, 3, 5, 7, 11, ?, 17

a. 12

b. 13

c. 14

d. None

Explanation-   Clearly, the given series consists of prime numbers starting from 2. So, the missing term is the prime number after 11, which is 13.

Que- Find the missing term :-   2, 3, 3, 5, 10, 13, ?, 43, 172, 177

a. 23

b. 38

c. 39

d. 40

Explanation-   The pattern is + 1, × 1, + 2, × 2, + 3, × 3, + 4, × 4, + 5   So, missing term = 13 × 3 = 39

Que- Find the missing term, 4, 9, 25, ?, 121, 169, 289, 361

a. 49

b. 64

c. 81

d. 87

Explanation-   The given series consists of squares of consecutive prime numbers i.e., 22 , 32 , 52 ,.....................,112 , 132 , 172 , 192  So, missing term = 72  = 49

Que- Find the missing term :-  240, ?, 120, 40, 10, 2

a. 180

b. 240

c. 420

d. 480

Explanation-   The pattern is  ÷ 1, ÷ 2, ÷ 3, ÷ 4, ÷ 5  So, missing term = 240 ÷ 1 = 240

Que- Find the missing term :- 1, 9, 25, 49, 81, ?

a. 100

b. 112

c. 121

d. None

Explanation-   The series consists of squares of consecutive odd numbers i.e., 12 , 32 , 52 , 72 , 92 ,.............. So, missing term = 112  = 121

Que- Find the missing term:  5, 2, 7, 9, 16, 25, ?

a. 41

b. 45

c. 48

d. 52

Explanation-   Each term in the series, except the first two terms, is the sum of the preceding two terms. So, missing term = 16 + 25 = 41

Que- Find the missing term: 1, 1, 4, 8, 9, 27, 16, ?

a. 32

b. 64

c. 81

d. 256

Explanation-   The series consists of squares and cubes of consecutive natural numbers i.e., 12 , 13, 22 , 23 , 32 , 33 , 42 ................. So, missing term = 43 = 64

Que- Find the missing term:  4, 12, 36, 108, ?

a. 144

b. 216

c. 304

d. 324

Explanation-   The pattern is  × 3  So, missing term = 108 × 3 = 324

Que- Find the missing term:   2, 8, 16, 128, ?

a. 2042

b. 2046

c. 2048

d. 2056

Explanation-   Each term in the series, except the first two terms, is the product of the preceding two terms. So, missing term = 16 × 128 = 2048

Que- Find the missing term:  3, 10, 101, ?

a. 10101

b. 10201

c. 10202

d. None

Explanation-   Each term in the series is obtained by adding 1 to the square of the preceding term. So, missing term = (101)2 + 1 = 10202

Que- Find the missing term:  5824, 5242, ?, 4247, 3823

a. 4467

b. 4718

c. 4856

d. 5164

Explanation-   Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of the preceding term, So, missing term = 5242 - 524 = 4718

Que- Find the missing term:  3, 8, 13, 24, 41, ?

a. 70

b. 75

c. 80

d. 85

Explanation-   The pattern followed is: n the term + (n + 1)th term + (n + 1) = (n + 2)th term Thus, 1st term + 2nd term + 2 = 3rd term;  2nd term + 3rd term + 3 = 4th term and so on. So, missing term = 6th term = 4th term + 5th term + 5 = 24 + 41 + 5 = 70

Que- Find the missing term:  589654237, 89654237, 8965423, 965423, ?

a. 58965

b. 65423

c. 89654

d. 96542

Explanation-   The digits are removed one by one from the beginning and the end in order alternately so as to obtain the subsequent terms of the series.

Que- Find the missing term:  6, 18, 3, 21, 7, 56, ?

a. 8

b. 9

c. 63

d. 64

Explanation-   Each term at an even place in the series is the product of its two adjacent terms. Thus, if the missing term be x, then we have : 7 × x = 56 or x = 56 ÷ 7 = 8

Que- Find the missing term:  1, 3, 4, 8, 15, 27, ?

a. 37

b. 44

c. 50

d. 55

Explanation-   The sum of any three consecutive terms of the series gives the next term, So, missing number = 8 + 15 + 27 = 50

Que- Find the missing term:  20, 20, 19, 16, 17, 13, 14, 11, ?, ?

a. 10, 10

b. 10, 11

c. 13, 14

d. None

Explanation-   Let the missing terms of the series be x1 and x2. Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11. x1, x2 is a combination of two series: I. 20, 19, 17, 14, x1  and  II. 20, 16, 13, 11, x2 The pattern in I is - 1, - 2, - 3,..............So, missing term, x1= 14 - 4 = 10 The pattern in II is - 4, - 3, - 2,.......... So,missing term, x2 = 11 - 1 = 10

Que- Find the missing term: 45, 54, 47, ?, 49, 56, 51, 57, 53

a. 48

b. 50

c. 55

d. None of these

Explanation-   The given sequence is a combination of two series: I. 45, 47, 49, 51, 53   and II. 54, ?, 56, 57 Clearly, II. consists of consecutive natural numbers, starting from 54. so, missing term = 55.

Que- Find the missing term:  2, 15, 4, 12, 6, 7, ?, ?

a. 8, 8

b. 8, 0

c. 3, 8

d. None of these

Explanation-   Let the missing terms of the series be x1 and x2. Thus, the sequence 2, 15, 4, 12, 6, 7, x1, x2 is a combination of two series: I. 2, 4, 6, x1  and II. 15, 12, 7, x2 I consists of consecutive even numbers. So, missing term, x1= 8 The pattern in II is - 3, - 5, ........So, missing term x2 = 7 - 7 = 0

Que- Which term of the series 5,10, 20, 40,...................is 1280 ?

a. 10th

b. 9th

c. 8th

d. None of these

Explanation-   Clearly, 5 × 2 = 10, 10 × 2 =20, 20 × 2 = 40,............................. So, the series is G.P. in which a = 5 and r = 2. Let 1280 be the nth term of the series. Then, 5 × 2n - 1= 1280 ⇔2n - 1= 256 = 28 ⇔ n - 1 = 8 ⇔ n = 9

Que- Find the missing term:  0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?

a. 28

b. 30

c. 32

d. 35

Explanation-   The given sequence is a combination of two series: I. 0, 3, 8, 15, 24, ?   and II. 2, 5, 10, 17, 26 The pattern in each one of I and II is + 3, + 5, + 7, + 9,.............. So, missing term = 24 + 11 = 35

Que- Find the missing term:  13, 35, 57, 79, 911, ?

a. 1110

b. 1112

c. 1113

d. None

Explanation-   The term of the given series are numbers formed by joining together consecutive odd numbers in order i.e., 1 and 3, 3 and 5, 5 and 7, 7 and 9, 9 and 11................... So, missing term = number formed by joining 11 and 13 = 1113

Que- Find the missing term:  625, 5, 125, 25, 25, ?, 5

a. 5

b. 25

c. 125

d. 625

Explanation-   The given sequence is a combination of two series: I. 625, 125, 25, 5  and II. 5, 25, ? The pattern is ÷ 5, while that in II is × 5. So, missing term = 25 × 5 = 125

Que- Find the missing term:  11, 10, ?, 100, 1001, 1000, 10001

a. 101

b. 110

c. 111

d. None of these

Explanation-   The pattern is - 1, × 10 + 1, - 1, × 10 + 1, - 1, × 10 +1, .... So, the missing term = 10 × 10 + 1 = 101

Que- Which of the following will not be a number of the series 1, 8, 27, 64, 125, ....?

a. 256

b. 512

c. 729

d. None