What is the hexadecimal equivalent of decimal 30? MCQ with Answer and Explanation

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What is the hexadecimal equivalent of decimal 30?

A. 20

B. 2A

C. 1E

D. 1F

Answer: Option C

Solution (By JKSSB Mock Tests)

30 decimal = 1E hex (1*16 + 14).

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Question #1

What is the decimal equivalent of octal 15?

A. 13

B. 16

C. 14

D. 15

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Correct Answer: Option A

Explanation:
Octal 15 = 1*8 + 5 = 13 decimal.

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Question #2

Which of the following is considered the basic function of a computer?

A. Entertainment

B. Communication

C. Power supply

D. Data processing

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Correct Answer: Option D

Explanation:
The fundamental function of a computer is data processing, which includes input, processing, output, and storage.

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Question #3

A computer system built with a single internal architecture optimized to handle both continuous physical waves and discrete data strings simultaneously is a:

A. Digital System

B. Mainframe System

C. Analog System

D. Hybrid System

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Correct Answer: Option D

Explanation:
Hybrid systems bridge the gap between analog and digital worlds, integrating processing nodes for both data formats into one layout.

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