1.

A student was asked to prove a statement by induction. He proved (i) P(5) is true and (ii) truth of P(n) rArr truth of P(n+1), n in N. On the basis of this, he could conclude that P(n) is true

Answer»

for no `N in N`
for all `n ge 5, n in N`
for all `n in N`
for all `n ge 1, n in N`

Answer :B


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