Among the following , a perfect number is

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100

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answer is A.

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Detailed Solution

Perfect number : Sum of factors of a given number is equal to twice of that number.
Factors of 6 = 1, 2, 3, 6
Sum of factors of 6 = 1 + 2 + 3 + 6
= 12
Twice the number = 2(6) = 12

∴ 6 is a perfect number.

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