What is the decimal equivalent of hexadecimal A? MCQ with Answer and Explanation

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What is the decimal equivalent of hexadecimal A?

A. 10

B. 11

C. 12

D. 13

Answer: Option A

Solution (By JKSSB Mock Tests)

Hexadecimal A represents decimal 10.

This question belongs to: Computer Computer Fundamentals

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Question #1

What is the binary equivalent of octal 72?

A. 110010

B. 101010

C. 111010

D. 111100

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Correct Answer: Option C

Explanation:
Octal 72 = 7 2 -> 111 010 = 111010 binary.

This question belongs to: Computer Computer Fundamentals

Question #2

Which fundamental component of the Von Neumann CPU is responsible for temporarily storing the intermediate results of arithmetic and logical operations?

A. System Bus

B. Accumulator

C. Program Counter

D. Instruction Register

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Correct Answer: Option B

Explanation:
The Accumulator is a special-purpose register within the ALU that stores intermediate calculation results during processing.

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Question #3

What is the binary equivalent of decimal 20?

A. 10100

B. 10010

C. 11100

D. 11000

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Correct Answer: Option A

Explanation:
20 in binary is 10100 (16+4).

This question belongs to: Computer Computer Fundamentals

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