13 . show that:

i. P(A∩B∩C)=P(A|B∩C)P(B|C)P(C)

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14.two boxes contain the number of the ball as indicated. a box is chosen randomly and then two balls are

drawn One after the other, from that box

, without Replacement .what is the ....................W B W B

probability that both Of the drawn balls ...............6 4 5 5

have the same color?

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15. 14.two boxes contain the number of the ball as indicated.aball is drawn from box 1 and put in box 2 .a ball

Is then drawn randomly from box 2 .what

Is the probability that the ball drawn is ...............................W B W B

White ? .................................................. .....................m1 m2 m1 m2