SBI PO Prelims Model Paper 16

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Directions (Qs. 53 —55): Study the given information carefully and answer the questions that follow:
An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles.
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Question : 53 of 100
 
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If four marbles are picked at random, what is the probability that at least one is blue?
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