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Quantitative Aptitude

Divisibility Rule for Powers of 2 & 5

When 62924 is...

Question

When $(629)^{24}$ is divided by 21, find the remainder.

A

1

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B

2

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C

5

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D

11

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Solution

The correct option is A 1
629 divided by 21 remainder is -1. Thus the question changes to $\frac{- 1^{24}}{21}$ Remainder =+1

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