What is the decimal equivalent of octal 15? MCQ with Answer and Explanation

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What is the decimal equivalent of octal 15?

A. 15

B. 13

C. 16

D. 14

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Question #1

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Which computing pioneer designed the Tabulating Machine, which used punched cards to compile statistics for the 1890 United States Census?

A. Charles Babbage

B. Gottfried Leibniz

C. Herman Hollerith

D. Lady Ada Lovelace

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Correct Answer: Option C

Explanation:
Herman Hollerith invented the electromechanical punched card tabulator, founding a company that eventually merged to form IBM.

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Question #2

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What is the function of the Control Unit (CU) in a CPU?

A. Performs arithmetic operations

B. Handles network communication

C. Controls and coordinates operations

D. Stores data permanently

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Correct Answer: Option C

Explanation:
The Control Unit directs the operation of the processor by interpreting instructions and generating control signals.

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Question #3

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Which of the following is a characteristic of microcomputers?

A. Used in large data centers

B. Designed for single-user

C. Large physical size

D. Very high cost

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Correct Answer: Option B

Explanation:
Microcomputers are personal computers designed for individual use.

This question belongs to: Computer Computer Fundamentals

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