Chapter 6- Number System

1. Full Forms:

i. Bits – Binary Digits
ii. EB – Exabyte
iii. KB – Kilobyte
iv. MB – Megabyte
v. GB – Gigabyte
vi. PB – Petabyte

2. Multiple Choice Questions:

i. What is the result of the binary addition: 1001 + 1011?
Answer: a. (10100)

ii. When adding two binary numbers, what is the carrying value in binary addition?
Answer: c. 10

iii. In binary division, what is the result when dividing any binary digit by 0?
Answer: ❌ Division by 0 is undefined in any number system.
(None of the options are correct)

iv. What is the base of the decimal number system?
Answer: d. 10

v. What is binary equivalent to the octal number 74?
Answer: b. (111100)

vi. In the hexadecimal system, what does the symbol 'B' represent?
Answer: a. 11

Short Answer Questions.

a.       What is a number system? List its type.

A number system is a way to represent numbers using symbols or digits. Its types are binary, octal, decimal, and hexadecimal.

 b.      What is a binary number system? Give its digits.

The binary number system is a system of numbers that uses only two digits: 0 and 1. It is the base-2 number system and is used by computers to represent data and perform calculations.  It uses two digits to represent data: 0 and 1.

c.       What is a hexadecimal number system? Write its radix.

The hexadecimal number system uses 16 symbols to represent data. Its radix is 16.

d.      What is a decimal number system? List the digits used in the decimal number

The decimal number system uses 10 digits: 0 to 9.The digits used in the decimal number are 0,1,2,3,4,5,6,7,8 and 9

e.       What is an octal number system? Write its base.

The octal number system has a base of 8 and uses digits from 0 to 7.

 f.       What are the different measurement units of data in a computer?

Different measurement units of data are bit, byte, kilobyte, megabyte, gigabyte, terabyte, etc.