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If A1,A2 be two A.M.\'s G1,G2 be the two...

If `A_1,A_2` be two A.M.\'s `G_1,G_2` be the two G.M.\'s and `H_1,H_2` be the two H.M.\'s between a and b then (A) `(A_1+A_2)/(G_1 G_2)=(a+b)/(ab)` (B) `(H_1+H_2)/(H_1 H_2)=(a+b)/ab` (C) `(G_1G_2)/(H_1 H_2)=(A_1+A_2)/(H_1+H_2) (D) (A_1+A_2)/(H_1 H_2)=(a+b)/(a-b)`

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