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COM 101 COM 101 Past Questions Objective Question

Question

When converted respectively to binary, octal and hexadecimal, the decimal number 65 is?

Options
A 110101, 110, 37
B 1110011, 100, 51
C 110001, 221, 51
D 1000001, 101, 41
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

65₁₀ = 1000001₂, 65 ÷ 8 = 8 remainder 1, and 8 ÷ 8 = 1 remainder 0, so octal is 101₈ which is 81₈ (often written as 101). 65₁₀ = 41₁₆ (65 ÷ 16 = 4 remainder 1).

Hint

65 is 64 + 1. In binary, 64 is 1000000.

Question Info