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ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test MCQs With Answers

Question # 1

126₈+ 425₈= __________

Choose an answer

111101011₂

101101001₂

101101011₂

101100011₂

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Question # 2

The number ABC in Hexadecimal system is equivalent to which number in decimal system.

Choose an answer

A x 100 + B x 10 + C x 1

10 x 100 + 11 x 10 + 12

10 x 16 + 11 x 16 + 12

10 x 256 + 11 x 16 + 12

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Question # 3

A letter, number, or a special character is represented by a.

Choose an answer

bit

kilobyte

byte

megabyte

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Question # 4

AB₁₆+ CD₁₆= ________

Choose an answer

101111010₂

101111000₂

101111110₂

101101000₂

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Question # 5

The binary number 10011101 is equal to the hexadecimal number.

Choose an answer

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Question # 6

The digits used for hexadecimal number system are.

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A through Z

1 through 16

0 through 15

0 through 9 and A through F

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Question # 7

The number A9D in Hexadecimal system is equivalent to which number in decimal system.

Choose an answer

2727

2648

3717

2717

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Question # 8

The number A9D in Hexadecimal system is equivalent to which number in binary system.

Choose an answer

101010111101

101010011101

101110011101

101010011111

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Question # 9

The hexadecimal number system is widely used in analyzing and programming in.

Choose an answer

analog computers

binary computers

decimal computers

micro computers

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Question # 10

The number 10000 would appear just immediately after.

Choose an answer

FFFF (hex)

1111 (binary)

7777 (octal)

all of the above

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