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UPSC NDA Math Model Paper 1

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Question : 45

Total: 120

In an experiment, it is found that the probability that a released bird will come back is

. It is also found that when a bird comes back, the probability that the bird will stay is

. In this experiment, what is the probability that a released bird will come back and fly away?

4
15
3
8
2
15
2
5

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