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Discussion

Quantitative Reasoning Preparation for GRE
(49)

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Directions: The following functions have been defined for X, Y and Z (three numbers).

A(X, Y) = Average of X and Y
P(X, Y) = Product of X and Y
D(X, Y) = X divided by Y

Answer the question with the above data.

The sum of X, Y and Z is given by

 
P(A(P(A(Y, X), 2), Z), 2)
D(A(P(Y, X), 3), Z), 2)
D(P(A(P(Y, X), 2), Z), 3)
D(P(A(Y, Y), 7) Z), 9)
Cannot be determined

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Arpit Srivastava

When the value of Z is not given....how can the exact value be determined?