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[" B.(i) A die is tossed thrice.A succes...

[" B.(i) A die is tossed thrice.A success is "getting 1or 6" on a toss.Find the mean and variance of "],[" the number of success."],[" (ii) For a Poisson variate if P(X=2)=P(X=1),then find P(X= 1or 0).Find also mean of X.[5+5] "]

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