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Question
A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is a jack, queen or a king
Solution
Let S denote the sample space.
Then, n(S) = 52
Let E4 = event of drawing a jack, a queen or a king
Out of 52 cards, there are four jacks, four queens and four kings.
i.e. n (E4) = 4C1 + 4C1 + 4C1
= 4 + 4 + 4 = 12
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