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A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is $$\frac{3}{7}$$, then$$\frac{x}{y}$$ =
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A.$$\frac{7}{11}$$
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B.$$\frac{3}{4}$$
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C.$$\frac{7}{4}$$
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D.$$\frac{4}{3}$$
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E.$$\frac{11}{7}$$
D显示答案
