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One ball is drawn from a box containing 3 red, 2 blue and x green balls. Find the value of x so that the probability of drawing a green ball is double that of red or blue ball.

 Jan 31, 2021
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The probability of drawing a red or blue is 3+2/3+2+x

The green probability would be x/3+2+x.

Simplifying we have that 2(3+2)=x.

So 2(5)=10=x.

 Jan 31, 2021

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