Question

If the sum of first m terms of an A.P. is n and sum of first n terms of same A.P. is m, prove that sum of first (m+n) terms of it is -(m+n)

Answer 1

Answer:

If the sum of first m terms of an AP is the same as the sum of its first n terms, show that the sum of its first (m + n) terms is zero

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