If the sum of first p terms of an A.P is...

If the sum of first `p` terms of an A.P is equal to the sum of the first `q` terms, then show that the sum of its first `(p+q)` terms is zero. `(p ne q)`.

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If the sum of first p terms of an A.P is equal to the sum of first q terms, then show that the sum of its first (p+q) terms is zero . (p ne q) .

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