Question (7/85)

Given that `X = (10)^0.48`  and `Y = (10)^0.70`  , then what is the approximate value of Z in expression `X^Z = Y^2`

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(A)  1.45

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(B)  1.88

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(C)  2.9

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(D)  3.7

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Question (8/85)

If `X = 3 + 2 sqrt(2)`  , then what is value of `sqrt(X) - 1/(sqrt(X))`

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(A)  1

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(B)  2

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(C)  3

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(D)  4

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