Question
In a game, there are 12 cards, 5 of which are red and
the rest are blue. If 2 cards are drawn at random, the question is to determine the probability that a red card will be drawn.Solution
ATQ, The probability that a red card will be drawn, one of the cards must be blue card Probability of at least one card being of blue card = 1 – probability of both cards being of red. Required probability = 1 – (5C2/12C2) = 1 – (5/33) = 28/33
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