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If a, b, c are in A.P. then prove that t...

If a, b, c are in A.P. then prove that the following are also in A.P:(iii)`(1)/(a)((1)/(b)+(1)/(c )),(1)/(b)((1)/(c )+(1)/(a)),(1)/(c )((1)/(a)+(1)/(b))`are in A.P

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