Question (15/25)

If `log_X 4 = 0.4`  , then the value of X is ?

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(A)  2

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(B)  4

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(C)  16

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(D)  32

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Question (16/25)

If `log_X(9/16) = -1/2`  , then the value of X equal to ?

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(A)  256/81

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(B)  81/256

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(C)  4/3

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(D)  3/4

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