# Number System Multiple Choice Questions

1. Which of the following is not a type of number system.

A. Positional

B. Non-Positional

C. Octal

D. Fractional

2. How is the number 5 represented in non-positional number system.

A. IIIII.

B. 5.

C. V.

D. v

3. The base is the total number of digits in a number system.

A. True

B. False

C. Nothing Can be said

D. None of the mentioned

4.  The LSB and MSB of 1243247 are ____ and ____.

A. 1, 7.

B. 4, 7.

C. 7, 1.

D. 4, 1.

5. A device that uses positional notation to represent a decimal number.

A. Abacus

B. Calculator

C. Pascaline

D. Computer

6. The 2’s complement of 5 is ______________.

A. 1011.

B. 101.

C. 1010.

D. 11.

7. What does BCD stand for.

A. Bitwise coded  decimal

B. Binary coded decimal

C. Binary converted decimal

D. Bitwise Converted Decimal

8. 1 zettabyte = ______________.

A. 1024 TB.

B. 1024 EB.

C. 1024 ZB.

D. 1024 PB.

9. Perfrom BCD addition: 2+3= _______________.

A. 10.

B. 11.

C. 101.

D. 1010.

10.  ASCII stands for _____________________.

A. American standard code for information interchange

B. American scientific code for information interchange

C. American scientific code for international interchange

D. American standard code of international interchange

Answer = American standard code for information interchange

11. Which of the following is not a positional number system.

A. Roman Number System

B. Octal Number System

C. Binary Number System

12. The value of radix in binary number system is _____________.

A. 2.

B. 8.

C. 10.

D. 1.

13. The binary equivalent of the decimal number 10 is __________.

A. 10.

B. 10.

C. 1010.

D. 10.

14.  A computer language that is written in binary codes only is _____.

A. machine language

B. C.

C. C Sharp

D. pascal

15. The octal equivalent of 1100101.001010 is ______.

A. 624.12.

B. 145.12.

C. 154.12.

D. 145.21.

16. The input hexadecimal representation of 1110 is _______________.

A. 111.

B. E.

C. 15.

D. 14.

17. Convert the binary equivalent 10101 to its decimal equivalent.

A. 21.

B. 12.

C. 22.

D. 31.

18. Which of the following is not a binary number.

A. 1111.

B. 101.

C. 11E.

D. 0.

19. In the third option, there is an alphabet E present which makes it an invalid binary number Alphabets are only allowed in the hexadecimal number system.

A. Which of the following is the correct representation of a binary number.

B. (124)2.

C. 1110.

D. (110)2.

20. What could be the maximum value of a single digit in an octal number system.

A. 8.

B. 7.

C. 6.

D. 5.

21. The maximum number of bits sufficient to represent an octal number in binary is _______.

A. 4.

B. 3.

C. 7.

D. 8.

22.  The binary number 111 in octal format is  ________________.

A. 6.

B. 7.

C. 8.

D. 5.

23. Convert (22)8 into its corresponding decimal number.

A. 28.

B. 18.

C. 81.

D. 82.

24. The octal equivalent of the binary number (0010010100)2 is ______________.

A. 422.

B. 242.

C. 224.

D. 226.

25. Octal subtraction of (232)8 from (417)8 will give  ______________.

A. 165.

B. 185.

C. 815.

D. 516.

26. The 1’s complement of 0.101 is _________________.

A. 1.01.

B. 0.01.

C. 0.101.

D. 1.101.

A. A01.

B. A02.

C. B01.

D. C01.

28. Express the decimal format of the signed binary number (10010)2 ..

A. 2.

B. 12.

C. -12.

D. -2.

29. What does the symbol D represent in a hexadecimal number system.

A. 8.

B. 16.

C. 13.

D. 14.

30. ABC is a valid hexadecimal number.

A. True

B. False

C. Nothing Can be said

D. None of the mentioned

31. The maximum number of bits sufficient to represent a hexadecimal number in binary:.

A. 4.

B. 3.

C. 7.

D. 8.

32.  The binary number 1110 in hexadecimal format is _____________.

A. 6.

B. E.

C. 14.

D. 15.

33. Convert (52)16 into its decimal equivalent.

A. 28.

B. 83.

C. 80.

D. 82.

34. The hexadecimal equivalent of the binary number (0010010100)2 is :.

A. 0B4.

B. 0A4.

C. 224.

D. 114.

A. 165.

B. 185.

C. 815.

D. 516.

36. The 2’s complement of 10.11 :.

A. 10.

B. 0.01.

C. 1.01.

D. 10.01.

37.  Here, 10.11 gets converted to 01.00 in its 1’s complement format Further, to convert 1’s complement into 2’s, we add 1 to the result  Here, 01.00+1=10.00..

B. A01.

C. A02.

D. B01.

38. What do we call the point(decimal) in any hexadecimal number of the form 111.A3.

C. decimal

D. octal point

39. The value of base in a decimal number system is ____________.

A. 8.

B. 2.

C. 10.

D. 16.

40. The 2’s complement of 15 is ____________.

A. 0.

B. 1.

C. 10.

D. 100.

41. Another name for base is __________.

A. root

C. entity

D. median

42. The decimal equivalent of (0.101)2 will be  ____________.

A. 0.5.

B. 0.625.

C. 0.25.

D. 0.875.

43. The signed magnitude for -3 will be  ___________.

A. 11.

B. 10000011.

C. 11111101.

D. 11111100.

44.  A number with both integer and a fractional part has digits raised to both positive and negative powers of 2 in a decimal number system.

A. True

B. False

C. Nothing Can be said

D. None of the mentioned

45. The hexadecimal representation of 14 is  _______________.

A. A.

B. F.

C. D.

D. E.

46. Which of the following is not a decimal number.

A. 114.

B. 43.47.

C. 99.9A.

D. 10101.