$\sqrt{1\frac14\times\frac{64}{125}}=?$

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A16/25

B5/4

C4/5

D25/16

Answer:

$\sqrt{1\frac14\times\frac{64}{125}}=\sqrt{\frac54\times\frac{64}{125}}$

$=\sqrt{\frac{16}{25}}$

$=4/5$

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