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A biased coin is tossed 4 times .the probability of heads on any toss is 0.4 let X denote the number of heads that come

A biased coin is tossed 4 times .the probability of heads on any toss is 0.4 let X denote the number of heads that come up.calculate

1. P(X 2)

2.P(1X3)

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