What is the decimal equivalent of binary 1001? MCQ with Answer and Explanation

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What is the decimal equivalent of binary 1001?

A. 9

B. 10

C. 8

D. 11

Answer: Option A

Solution (By JKSSB Mock Tests)

1001 = 8+1 = 9.

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Question #1

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What is the decimal equivalent of binary 111?

A. 9

B. 6

C. 8

D. 7

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Correct Answer: Option D

Explanation:
111 in binary = 4+2+1 = 7.

This question belongs to: Computer Computer Fundamentals

Question #2

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Which component is used to hold the CPU's frequently used data?

A. Hard disk

B. Registers

C. Cache memory

D. RAM

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Correct Answer: Option C

Explanation:
Cache memory holds frequently accessed data for quick CPU access.

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Question #3

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Which section of the central processing unit is specifically designed to perform comparisons, such as determining if one variable is equal to another?

A. Input Unit

B. Logic Unit

C. Control Unit

D. Storage Unit

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Correct Answer: Option B

Explanation:
The Logic Unit (part of the ALU) handles logical operations, conditional statements, and relational comparisons (AND, OR, NOT, , =).

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