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CBSE Class 11 Computer Science Number System Practice Test
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Avg score: 1% • Most missed: “Octal equivalent of decimal number 122 is __________”

Number system is the way to represent everything in the form of digits. 

There are four types of number system.

1. Binary Number System
2. Decimal Number System
3. Octal Number System
4. Hexadecimal Number System

CBSE Class 11 Computer Science Number System Practice Test
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25 Questions

1. Which of the following is not an example of Hexadecimal number?
2. Binary equivalent of decimal number 65 is __________
3. 4 bit binary value of hexadecimal symbol ‘D’ is _______________
4. Octal equivalent of decimal number 122 is __________
5. Which of the following number system is used to simplify the binary representation for us to understand?
6. In hexadecimal system, each alphanumeric digit is represented as a group of _____________ binary digits
7. Which is the Least Significant Bit (LSB) in 010101
8. Hexadecimal number system consist of _________ unique symbols?
9. Which of the following sequence is correct to convert decimal number to binary?
Step 1: Note the remainder.
Step 2: Divide the given number by 2.
Step 3: Write the noted remainders in the reverse order (from bottom to top)
Step 4: Keep on dividing the quotient by 2 and note the remainder till the quotient is zero.
10. Which of the following is not an example of Octal number?
11. base value of hexadecimal number system is ______
12. To convert 110010101101 to hexadecimal value, we make a group of 4 bits from ____________
13. Decimal number equivalent to binary number 1110101 is _____
14. Binary representation of the following hexadecimal number is _______________
98E
15. Which two numbers form the binary number system?
16. Which of the following memory address is easy to remember or compact in size?
17. The decimal number is repeatedly divided by _________ to obtain its equivalent octal number.
18. Every number system has a set of unique characters or literals. The count of these literals is called ____
19. Which Hexadecimal symbol is used for decimal number 15?
20. Octal representation of the following binary number is ___________
1111.0101
21. Decimal number system has ________ digits
22. Which of the following symbol is not a part of Hexadecimal number system?
23. Octal representation of the following hexadecimal number is _______________
A7B
24. 4 bit binary code for binary number 15 is ___________
25. Which of the following is not an examples of binary numbers?

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