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Real Numbers

Question

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A card is drawn from a pack of 52 cards. Find the probability that it is (a) a black card, (b) a red card, (c) ace of spade, (d) an ace, (e) a red ace, (f) a king or a queen.

Solution

Ans. space space space space space space space left parenthesis straight a right parenthesis space 1 half space space space left parenthesis straight b right parenthesis space 1 half space space space left parenthesis straight c right parenthesis space 1 fourth space space left parenthesis straight d right parenthesis space 1 over 13 space left parenthesis straight e right parenthesis space 1 over 26 space left parenthesis straight f right parenthesis space 2 over 13 space

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