Gmatdecoder wrote:

Although the question has been answered before there are certain confusions.

If we pick numbers say S=32. Then there would be 4 groups of 8. if u=2 then there should be 12 units and same no of researchers. In the OA S/U gives 32/2= 16.

On the other hand when we select S= 32, U=8. the OA gives researchers equal 4 and that is understandable.

Why are we getting two answers by the same strategy of picking numbers?

Any one?

Hi

Gmatdecoder,

In case where s = 32 and u = 2, assuming equal distribution between \(4\) groups i.e. \(\frac{32}{4} = 8\) subjects in each group, you will have the following number of researchers in each group:

Test Group1 test group will have \(\frac{8}{2} = 4\) researchers. Therefore \(3\) test groups will have \(= 4* 3 = 12\) researchers

Control group1 Control group will have \(= \frac{8}{2} = 4\) researchers.

Therefore total researchers \(= 12 + 4 = 16\) which is the same as \(\frac{s}{u} = \frac{32}{2} = 16\)

Hope it's clear

Regards

Harsh

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