CBSE BOARD X, asked by Apxex, 1 year ago

please explain this question

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Answered by gaurang5

1

it is asking about probability that what is the probability of a black ball when there are x black balls in 12 balls
it is
x/12
further is here

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Apxex: tysm dude

Answered by pnotme123

1

Total=12
So x/12
After adding the balls
6+x/18=x/12
X=12

pnotme123: Oh!I guess my answer is wrong........

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