1.

Find H.M. of two positive numbers whose A.M. and G.M. are 15/2 and 6.

Answer»

A.M. = 15/2, G.M. = 6

Now, (G.M.)2 = (A.M.) (H.M.)

∴ 62 = 15/2 x H.M.

∴ H.M. = 36 × 2/15

∴ H.M. = 24/5



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