Question

there are 12 identical balls of different colours if six more black balls are added then probability of black balls increases by 1/12 find the original number of black balls​

Answer 1

Answer:

A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball?

If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what it was before. Find x.

Step-by-step explanation:

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