Question

A bag contains 12 balls out of which x are black balls. Find the probability of getting a black ball of one
ball is drawn. If 6 more blacks balls are added in the bag, the probability of getting a black ball will be
double. Findx​

Answer 1

your question is incomplete but if it says that the probability of getting black ball after addition of 6 black balls is doubled... here is the answer ...hope it helps

Answer 2

Answer:

sample set ,|S| =12

E is the event of getting one ball out of x black balls

P(E) =x/12

Again if 6 more balls are added

sample set. |S|= 12+6 =18

P(E) = x+6/18

I hope it helps

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