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Questions  >>  CBSE XI  >>  Math  >>  Probability
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A box contain 10 red marbles,20 blue marbles and 30 green marbles.5 marbles are drawn from the box.What is the probability that all will be blue?

$\begin{array}{1 1}(A)\;\large\frac{20C_5}{60C_5}\\(B)\;\large\frac{19C_5}{29C_5}\\(C)\;\large\frac{39C_5}{29C_5}\\(D)\;\large\frac{10C_5}{20C_5}\end{array} $

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