A bag contains 6 black, 5 white balls. One ball is drawn randomly. The probability of it being a black ball is......

611

511

111

27128

A

611

B

27128

C

511

D

111

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Solution

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The correct option is A611 Total number of balls in the bag, n(S)=6+5=11

Hence the probability of it being a black ball is=n(E)n(S)=611

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