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Show that P(n): 3^(n) is less than 15 is...

Show that P(n): `3^(n)` is less than 15 is true for `n ne 2`

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From P(n) `Rightarrow P(n+1)` we cannot say that P(n) is true for any. For the principleof mathematical induction it should have been give that `P(n) Rightarrow P(n+1)` and P(n) is true for some fixed +ve integer say n=m
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