The expression is divisible by
49
64
25
36
Principle of Mathematical Induction
Mathematical induction is one of the techniques which can be used to prove a variety of mathematical statements which are formulated in terms of n, where n is a positive integer
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For n=1,
It is divisible by 25
Let P(r) be true for n=r
For n=r+1,
(From (i))
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