White, red and blue balls in a bag. if one ball is drawn out from the bag then 1)probability of red ball = 2/7 2)probability of white ball = 1/2 there are 6 blue ball in bag. find the total number of balls.
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15 are total no of balls 7+2+6
I am not sure
15 are total no of balls 7+2+6
I am not sure
MotwaniANI:
I think that's not correct
it is ur opinion otherwise i am not sure
But according to me you'rs ans. is not correct
Answered by
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2/7+1/2+6/x=1
4+7/14+6/x=1
6/x=1-11/14
6/x=3/14
So, x=6*14/3
x=28
Thus we can say that there are 28 ball.
8 red balls
14 blue balls
6 blue balls
Thus total 28 balls
4+7/14+6/x=1
6/x=1-11/14
6/x=3/14
So, x=6*14/3
x=28
Thus we can say that there are 28 ball.
8 red balls
14 blue balls
6 blue balls
Thus total 28 balls
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