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प्रश्न
A bag contains 3 red balls, 4 blue balls and 1 yellow ball, all the balls being identical in shape and size. If a ball is taken out of the bag without looking into it; find the probability that the ball is red.
बेरीज
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उत्तर
Total number of balls in the bag = 3 + 4 + 1 = 8 balls
Number of possible outcomes = 8 = n(S)
Event of drawing a red ball = {R, R, R}
n(E) = 3
Probability of drawing a red ball = `(n(E))/(n(S)) = 3/8`
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