What is the octal equivalent of decimal 100? MCQ with Answer and Explanation

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What is the octal equivalent of decimal 100?

A. 144

B. 146

C. 147

D. 145

Answer: Option A

Solution (By JKSSB Mock Tests)

100 decimal = 144 octal (1*64 + 4*8 + 4 = 100).

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Question #1

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What structural component was predominantly used for internal primary data storage during the first generation of computers?

A. Floppy Disks

B. Magnetic Drums

C. Integrated Silicon Chips

D. Magnetic Core Memory

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Correct Answer: Option B

Explanation:
First-generation computers used large, rotating magnetic drums as their primary internal mechanism for holding electronic data states.

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Question #2

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What is the decimal equivalent of hexadecimal A?

A. 11

B. 13

C. 10

D. 12

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Correct Answer: Option C

Explanation:
Hexadecimal A represents decimal 10.

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Question #3

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Which of the following is an example of system software?

A. Windows 10

B. Google Chrome

C. Adobe Photoshop

D. Microsoft Word

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Correct Answer: Option A

Explanation:
Operating systems like Windows are system software, while applications are user programs.

This question belongs to: Computer Computer Fundamentals

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