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A box contains 10 red marbles, 20 blue m...

A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn from the box.What is the probability that ( I ) all will be blue ? ( ii) atleast one will be green?

Text Solution

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The correct Answer is:
(i) `(""^(20)C_(5))/(""^(60)C_(5))` (ii) `1 - (""^(30)C_(5))/(""^(60)C_(4))`
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