1.

If n is a natural number the 92n - 42n is always divisible by1. 132. both 5 and 133. 5 4. none of the above 

Answer»

Correct option is (2) both 5 and 13

92n - 42n is of form an - bn (where n is even)

Therefore an - bn is always divisible by (a - b) & (a + b)

So, it is divisible by (9 + 4) and (9 - 4) i.e., 5 and 13



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