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$5^{4}-1$ is divisible by

  1. $13$ 
  2. $31$ 
  3. $5$ 
  4. none of these
in Quantitative Aptitude recategorized by
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1 Answer

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$5^{4}-1\\ =625-1\\ =624$

Which is divided by 13.

 

Hence,Option(A)13.
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