A box contains 10 marbles. 7 arbles. 7 of which black and 3 drawn after the other without replacement. Find the probability of getting i). a red , then a black marble ii). Two black marbles

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02-02-2022
Mathematics

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A box contains 10 marbles. 7 arbles. 7 of which black and 3 drawn after the other without replacement. Find the probability of getting i). a red , then a black marble ii). Two black marbles

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