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Find the value of the determinant |(bc, ca, ab), (p, q, r), (1, 1, 1)| where a, b and c are respectively the pth, qth and rth

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Find the value of the determinant |(bc, ca, ab), (p, q, r), (1, 1, 1)| where a, b and c are respectively the pth, qth and rth terms of a harmonic progression.

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 Since, a, b, c are pth, qth and rth terms of HP'

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