Binary and Number Systems Quiz

The binary equivalent of decimal number 25 is:

• 11001

• 10101

• 11100

• 10011

Which number system uses base 8?

• Decimal

• Octal

• Binary

• Hexadecimal

What is the decimal equivalent of binary 10101?

• 21

• 22

• 23

• 25

Hexadecimal number system has _______ digits

• 8

• 10

• 16

• 12

The hexadecimal equivalent of binary 11010110 is:

• D6

• C7

• E5

• A9

What is the binary equivalent of hexadecimal 'F'?

• 1111

• 1110

• 1101

• 1001

The octal equivalent of binary number 101110 is:

• 56

• 57

• 66

• 46

Which of the following is not a valid binary number?

• 10010

• 101012

• 1101

• 1110

The decimal equivalent of octal number 76 is:

• 62

• 63

• 64

• 78

The base of hexadecimal number system is:

• 10

• 2

• 8

• 16