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maths

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from a batch of 10 eggs 3 are rotten.2 eggs are selected in succession.Find the probability that(a)both are rotten (b)only 1 is rottewn and at least 1 is fresh.

b) Probability(1rotten, 1fresh)=3/10*7/9

Notice how the probabality after drawing one rotten, the fresh egg probabality increases slightly.

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