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For the next two (2) items that follow :
Given that logxy,logzx,logyz are in G.P,xyz=64 and x3,y3,z3 are in AP.

[NDA I 2016]

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Question : 68

Total: 79

Which one of the following is correct ? x, y and z are

in AP only
in GP only
in both AP and GP
neither in AP nor in GP

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