Explanation
Put n = 1, in all options, which eliminates option (1), (2) and (3)
Therefore, option (4) is correct.
For n = 1 p(1) = 1(1+1) +2 = 4
Which is not equal to the given statement
Therefore, Mathematical induction is not applicable, i.e, no value exists in natural numbers.
As above, clearly last digit of (17)256 is 1.
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