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[" 4.A box contains "12" balls out of wh...

[" 4.A box contains "12" balls out of which "x" are black.If one balls in the bag."],[" 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.]

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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.

A box contains 12 balls out of which x are black. If one ball is dran 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.

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.

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.

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.

A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probablity 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.

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.

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.