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If Δr = |(2r, x, N(N + 1)), ((6r2 - 1), y, N2(2N + 3)), (4r3 - 2Nr), z, N3(N + 1))|,  where N ∈ natural numbers, then  Δr for r ∈ [r=1, N] is equal to

(A) N

(B) N2

(C) Zero

(D) None of these

1 Answer

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Best answer

Answer is (C) Zero

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