Unit Test 1 Class 8 Computer

The input hexadecimal representation of 1110 is _______________

• 0111

• 15

• E

• 14

Convert the binary equivalent 10101 to its decimal equivalent.

• 21

• 12

• 22

• 31

Which of the following is not a binary number?

• 1111

• 10101

• 11E

• 0100101

Which of the following is the correct representation of a binary number?

• (124)²

• 1110

• (110)2

• (000)₂

What could be the maximum value of a single digit in an octal number system?

• 8

• 7

• 6

• 5

The binary number 111 in octal format is ________________

• 6

• 7

• 9

• 8

Which of the following is not the characteristics of binary number system

• Last position in a binary number represents a x power of the base 2. Example 2 ^x where xrepresents the last position - 1.

• Uses two digits, 0 and 1.

• Each position in a binary number represents a 0 power of the base 2. Example 2⁰

• Also called base 1 number system

Hexadecimal numbers are a mixture of

• Binary and octal numbers

• Binary and decimal numbers

• Letters and decimal digits

• Octal and decimal numbers

Convert (22)₈ into its corresponding decimal number.

• 28

• 18

• 82

• 81

The octal equivalent of the binary number (0010010100)₂ is ______________

• 226

• 242

• 224

• 422