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Prove the following by the principle of mathematical induction:`\ 2. 7^n+3. 5^n-5` is divisible 25 for all `n in Ndot`

A

`24, AA n in N`

B

`21 , AA n in N`

C

`35 , AA n in N`

D

`50, AA n in N`

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A
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DISHA PUBLICATION-PRINCIPLE OF MATHEMATICAL INDUCTION-Exercise-1 Concept Builder
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