Sequence and Series
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hey man the answers are 16 a and b are wrong a is n(n+1) and b is N^2

Hi, they are both correct. For a, 0 is the first even integer. If the problem had said first n even positive integers, then what you put would be correct. For b, what I put is the same as what you said, since n + n(n1)= n^2 + nn= n^2
The answer is accepted.
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