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If A1,A2 be two AM's and G1,G2 be the tw...

If `A_1,A_2` be two AM's and `G_1,G_2` be the two GM's between two number a and b , then `(A_1+A_2)/(G_1G_2)` is equal to

A

`(a+b)/(2ab)`

B

`(2ab)/(a+b)`

C

`(a+b)/(ab)`

D

`(ab)/(a+b)`

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