1.

Abox contains 6 black and 4 white balls. Two balls are drawn without at random from it. The probability that both the ball are black is __​

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Answer:

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Step-by-step explanation:

There are 10 balls in the box. The PROBABILITY that the first ball drawn will be white is 4/10, and the probability that the second ball will ALSO be white is 3/9. Thus, the probability of selecting two white balls, without replacement, is 4/10 X 3/9 = 2/5 x 1/3 = 2/15.

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