1.

(5317 - 1) is divisible by 1. 532. 93. 134. 17

Answer» Correct Answer - Option 3 : 13

Given: 

The number is (5317 - 1)

Concept: 

When is n is odd, then (an - bn) is divisible by (a - b)

When n is even, then (an - bn) is divisible by (a - b) and (a + b)

Calculation: 

The number is (5317 - 1)

Also, we can write this

⇒ (5317 - 117

Here, n is 17(odd)

Then, the number is must be divisible by

⇒ 53 - 1

⇒ 52

Then, the number is also divisible by the factor of 52

Factor 52 is 1, 2, 4, 13, 26, and 52.

∴ The required answer is 13.



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