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Probability
Two red balls are drawn from a bag containing 3 red and 4 white balls. Find odds against event.
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Probability of red ball = 3C2/7C2
= 3/21
Odds against event = no/yes = 18/21 / 3/21 = 6
Answered by an IIT JEE ASPIRANT and all India mathematics OLYMPIAD TOPPER in class 10th
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