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प्रश्न
Find n(S) of the following random experiment.
From an urn containing 5 gold and 3 silver coins, 3 coins are drawn at random
उत्तर
There are 5 gold and 3 silver coins, i.e., 8 coins.
3 coins can be drawn from these 8 coins in 8C3 ways.
∴ n(S) = 8C3
= `(8!)/(5!3!)`
= `(8 xx 7 xx 6 xx 5!)/(5! xx 3 xx 2 xx 1)`
= 56
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