Q5 of 27 Page 4

If P(n) is the statement “n (n + 1) is even”, then what is P(4)?

We have P(n) = n (n + 1).


= P (4) = 4(4 + 1)


= P (4) = 4(5)


Hence, P (4) = 20, So P (4) is also Even.


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