Q.

A box contains 2 red and 4 white balls. If 4 balls are drawn one by one with replacement then the probability of getting one white ball is

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a

181

b

881

c

3281

d

49

answer is B.

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Detailed Solution

n=4 p=46=23⇒q=13p(X=1)==C1   4.q3.p=  4.(13)3.23  = 881
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A box contains 2 red and 4 white balls. If 4 balls are drawn one by one with replacement then the probability of getting one white ball is