If A(1),A(2) be two A.M.'s and G(1),G(2)...

If `A_(1),A_(2)` be two A.M.'s and `G_(1),G_(2)` be two G.M.,s between a and b, then `(A_(1)+A_(2))/(G_(1)G_(2))` is equal to

`(ab)/(a+b)`

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

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

`(a+b)/(ab)`

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