# Number Systems MCQ | Digital Electronics MCQ Part 1

In Digital Electronics various number systems are used. The working of Digital Electronic circuits and computer systems greatly relies on various computations that are based on number systems. Binary, Decimal, Hexadecimal, and Octal number systems are basic number systems that are used in Digital Electronics. Given below are Number system MCQs on Digital Electronics.

## Base of Decimal Number

Base of decimal number is:

1. 1
2. 5
3. 7
4. 10

Decimal number system is said to be of base 10 because it uses 10 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9)

## Base of Binary Number

Base of Binary Number system:

1. 0
2. 1
3. 2
4. 10

Base of binary number system is 2. Since it uses two digits 0 and 1

## Base of Octal Number System

Base of Octal Number System:

1. 1
2. 2
3. 8
4. 10

Octal number system is Base-8 number system. Since it use 8 digits. (0 to 7)

## Base of Hexadecimal number system

Base of Hexadecimal number system is:

1. 1
2. 8
3. 10
4. 16