self
Maths Puzzle
Numerical Ability
Permutation and Combination
There are three similar boxes, containing
(i). 6 black and 4 white balls
(ii). 3 black and 7 white balls
(iii). 5 black and 5 white balls, respectively.
If you choose one of the three boxes at random and from that particular box picks up a ball at random, and find that to be black, what is the probability that the ball picked up from the second box
Read Solution (Total 0)
self Other Question