Question (21/147)

The value of : `((3/5)^3 - (2/5)^3)/((3/5)^2 - (2/5)^2)`  is ?

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(A)  1/5

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(B)  19/25

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(C)  25/19

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(D)  5/3

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Question (22/147)

Simplify: `(147 xx 147 + 147 xx 143 + 143 xx 143)/(147 xx 147 xx 147 - 143 xx 143 xx 143)`

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(A)  1/4

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(B)  290

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(C)  1/290

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(D)  4

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