# Number system in Computer MCQ [Theory Question for all Exam]

Number system in computer MCQ. Most important Theory Questions and answers for all Competitive Exams. These are theoretical one liner most asked question.

## Number System in Computer MCQ

1. What is the minimum and maximum value in Octal Number System?

a) 1 to 8

b) 0 to 7

c) 2 to 9

d) None of the above

Ans. b

Values in Different Number System

Binary 2 (0,1)

Octal 8 (0,1,2,3,4,5,6,7)

Decimal 10 (0,1,2,3,4,5,6,7,8,9)

2. What number system is not understood by C language compiler directly?

a) Decimal

b) Octal

c) Binary

d) Hex Decimal

Ans. c

Explanation: Yes, C language can not understand Binary language directly. Because C language is a High level language

3. Numbers are stored and transmitted inside a computer in which format?

a) binary form

b) ASCII code form

c) decimal form

d) alphanumeric form

Ans. a

4. The value of radix in binary number system is ___

a) 2

b) 8

c) 10

d) 1

Ans. a

Explanation: In a binary number system, the value of base or radix is 2. The binary system uses only two digits for the representation of numbers.

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

a) machine language

b) C

c) C#

d) Pascal

Ans. a

Explanation: Machine Language is written in binary codes only. It can be easily understood by the computer and is very difficult for us to understand. A machine language, unlike other languages, requires no translators or interpreters.

6. A bit in a computer terminology means either 0 or 1.

a) True

b) False

Ans. a

Explanation: A bit stands for a binary digit. A binary digit can have only two digits i.e. 0 or 1.

7. Which of the following is not a binary number?

a) 1111

b) 101

c) 11E

d) 000

Ans. c

Explanation: Alphabets are only allowed in the hexadecimal number system.

8. One Nibble contain the number of bits equal to

a) 2

b) 4

c) 8

d) 16

Ans. b

9. The String of 8 bits is known as

a) Nibble

b) Byte

c) Octed

Ans. b

10. The 1’s complement of a binary number is obtained by changing

a) Each 1 to 0

b) Each 0 to 1

c) Each 1 to 0 and each 0 to 1

d) None of the above

Ans. c