# Number System MCQs with Answers

Number System MCQs are very important test and often asked by various testing services and competitive exams around the world. Here you will find all the Important Number System MCQs for Preparation.

The student can clear their concepts for Number System online quiz by attempting it. Doing MCQs based Number System will help you to check your understanding and identify areas of improvement.

Which number system uses only two digits, 0 and 1?
a) Binary system
b) Decimal system
d) Octal system

a) Binary system

a) 8
b) 10
c) 16
d) 2

a) 8

What is the value of the digit 8 in the hexadecimal system?
a) 8
b) 16
c) 10
d) 4

c) 10

The binary number 1010 is equivalent to which decimal number?
a) 5
b) 9
c) 10
d) 7

b) 9

How many digits are there in the binary number system?
a) 8
b) 10
c) 2
d) 16

c) 2

a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 4 in the octal system?
a) 4
b) 16
c) 8
d) 2

a) 4

The octal number 27 is equivalent to which decimal number?
a) 23
b) 19
c) 35
d) 17

b) 19

What is the value of the digit A in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

b) 10

The decimal number 25 is equivalent to which binary number?
a) 10101
b) 11001
c) 10011
d) 10110

c) 10011

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit F in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

a) 15

The octal number 17 is equivalent to which decimal number?
a) 15
b) 9
c) 23
d) 17

d) 17

What is the value of the digit 101 in the binary system?
a) 5
b) 10
c) 2
d) 3

a) 5

The hexadecimal number 2A is equivalent to which decimal number?
a) 42
b) 37
c) 10
d) 62

a) 42

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 6 in the octal system?
a) 6
b) 16
c) 8
d) 2

c) 8

The binary number 1101 is equivalent to which decimal number?
a) 12
b) 13
c) 14
d) 15

b) 13

How many digits are there in the octal number system?
a) 8
b) 10
c) 2
d) 16

a) 8

Which number system uses the digits 0-9 and the letters A-F?
a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 5 in the octal system?
a) 5
b) 16
c) 8
d) 2

a) 5

The octal number 33 is equivalent to which decimal number?
a) 27
b) 19
c) 43
d) 33

c) 43

What is the value of the digit C in the hexadecimal system?
a) 15
b) 10
c) 16
d) 12

d) 12

The decimal number 50 is equivalent to which binary number?
a) 11100
b) 11010
c) 10101
d) 10010

b) 11010

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit F in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

a) 15

The octal number 37 is equivalent to which decimal number?
a) 31
b) 25
c) 43
d) 39

d) 39

What is the value of the digit 1010 in the binary system?
a) 10
b) 5
c) 2
d) 8

a) 10

The hexadecimal number 3F is equivalent to which decimal number?
a) 32
b) 39
c) 63
d) 47

c) 63

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 7 in the octal system?
a) 7
b) 16
c) 8
d) 2

a) 7

The binary number 1001 is equivalent to which decimal number?
a) 8
b) 9
c) 10
d) 11

b) 9

How many digits are there in the octal number system?
a) 8
b) 10
c) 2
d) 16

a) 8

Which number system uses the digits 0-9 and the letters A-F?
a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 3 in the octal system?
a) 3
b) 16
c) 8
d) 2

c) 8

The octal number 47 is equivalent to which decimal number?
a) 39
b) 23
c) 55
d) 43

d) 43

What is the value of the digit D in the hexadecimal system?
a) 15
b) 10
c) 16
d) 13

d) 13

The decimal number 75 is equivalent to which binary number?
a) 10111
b) 11101
c) 11011
d) 10010

c) 11011

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit E in the hexadecimal system?
a) 15
b) 10
c) 16
d) 14

a) 15

The octal number 52 is equivalent to which decimal number?
a) 42
b) 29
c) 62
d) 47

a) 42

What is the value of the digit 1011 in the binary system?
a) 10
b) 11
c) 2
d) 8

b) 11

The hexadecimal number 4C is equivalent to which decimal number?
a) 62
b) 37
c) 76
d) 34

c) 76

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 10101 in the binary system?
a) 21
b) 15
c) 10
d) 17

b) 15

The hexadecimal number 1B is equivalent to which decimal number?
a) 19
b) 27
c) 22
d) 13

a) 19

How many digits are there in the binary number system?
a) 8
b) 10
c) 2
d) 16

c) 2

Which number system uses the digits 0-9 and the letters A-F?
a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 7 in the octal system?
a) 7
b) 16
c) 8
d) 2

a) 7

The octal number 63 is equivalent to which decimal number?
a) 43
b) 31
c) 77
d) 55

b) 31

What is the value of the digit B in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

d) 11

The decimal number 95 is equivalent to which binary number?
a) 11101
b) 101111
c) 110111
d) 100101

b) 101111

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit F in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

a) 15

The octal number 55 is equivalent to which decimal number?
a) 45
b) 29
c) 61
d) 47

c) 61

What is the value of the digit 110 in the binary system?
a) 6
b) 3
c) 2
d) 7

d) 7

The hexadecimal number A3 is equivalent to which decimal number?
a) 163
b) 107
c) 67
d) 83

c) 67

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 4 in the octal system?
a) 4
b) 16
c) 8
d) 2

c) 8

The binary number 1100 is equivalent to which decimal number?
a) 10
b) 12
c) 14
d) 9

b) 12

How many digits are there in the octal number system?
a) 8
b) 10
c) 2
d) 16

a) 8

Which number system uses the digits 0-9 and the letters A-F?
a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 2 in the octal system?
a) 2
b) 16
c) 8
d) 4

c) 8

The octal number 17 is equivalent to which decimal number?
a) 15
b) 9
c) 23
d) 17

d) 17

What is the value of the digit C in the hexadecimal system?
a) 15
b) 10
c) 16
d) 12

d) 12

The decimal number 50 is equivalent to which binary number?
a) 11100
b) 11010
c) 10101
d) 10010

b) 11010

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit F in the hexadecimal system?
a) 15
b) 10
c) 16
d) 11

a) 15

The octal number 37 is equivalent to which decimal number?
a) 31
b) 25
c) 43
d) 39

d) 39

What is the value of the digit 1010 in the binary system?
a) 10
b) 5
c) 2
d) 8

a) 10

The hexadecimal number 3F is equivalent to which decimal number?
a) 32
b) 39
c) 63
d) 47

c) 63

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 7 in the octal system?
a) 7
b) 16
c) 8
d) 2

a) 7

The binary number 1001 is equivalent to which decimal number?
a) 8
b) 9
c) 10
d) 11

b) 9

How many digits are there in the octal number system?
a) 8
b) 10
c) 2
d) 16

a) 8

Which number system uses the digits 0-9 and the letters A-F?
a) Binary system
b) Decimal system
d) Octal system

What is the value of the digit 3 in the octal system?
a) 3
b) 16
c) 8
d) 2

c) 8

The octal number 47 is equivalent to which decimal number?
a) 39
b) 23
c) 55
d) 43

d) 43

What is the value of the digit D in the hexadecimal system?
a) 15
b) 10
c) 16
d) 13

d) 13

The decimal number 75 is equivalent to which binary number?
a) 10111
b) 11101
c) 11011
d) 10010

c) 11011

How many digits are there in the decimal number system?
a) 8
b) 10
c) 2
d) 16

b) 10

Which number system uses the digits 0-7?
a) Binary system
b) Decimal system
d) Octal system

d) Octal system

What is the value of the digit E in the hexadecimal system?
a) 15
b) 10
c) 16
d) 14

a) 15

The octal number 52 is equivalent to which decimal number?
a) 42
b) 29
c) 62
d) 47

a) 42

What is the value of the digit 1011 in the binary system?
a) 10
b) 11
c) 2
d) 8

b) 11

The hexadecimal number 4C is equivalent to which decimal number?
a) 62
b) 37
c) 76
d) 34

c) 76

How many digits are there in the hexadecimal number system?
a) 8
b) 10
c) 2
d) 16

d) 16

Which number system uses the digits 0-9?
a) Binary system
b) Decimal system
d) Octal system

b) Decimal system

What is the value of the digit 10101 in the binary system?
a) 21
b) 15
c) 10
d) 17