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If a, b, c are in A.P., prove that 1/bc, 1/ca, 1/ab are in A.P.

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If a, b, c are in A.P., prove that 1/bc, 1/ca, 1/ab are in A.P.

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Given: a, b, c are in AP

∴ b – a = c – b …(i)

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