A big bag contains 50 balls some are white blue red. The number of white ball is more than the blue balls. The number of red balls is less than the number of white balls. The number of blue ball more than the number of blue ball. If one of the ball is selected at random from the bag. What is the probability to that of the red ball?
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quite difficult question yaar..
no of white ball=11×blue ball
RB
no of white ball=11×blue ball
RB
sakshipune2014:
Let no. Of white balls=x,red ball be y and blue balls =z
According to 1 Condition. x+y+z=50 and x=11z. Therefore 12z+y=50 . According to second condition x>y>z.
As 12z +y=50 . If z=4 then y=2 but y>z. Therefore z can 1/2/3
Now x=11y . Condition 1- If z=1 then x=11 and y=38
Condition 2-if z=2 then x=22 and y=36
Condition 3-if z=3 then x=33 and y=14
Only condition 3 satisfy the condition x>y>z . Therefore , no of red balls is 14
Propability is 14/50 i.e 7/25
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