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There are two boxes, one containing 10 red balls and the
other containing 10 green balls. You are allowed to move the
balls between the boxes so that when you choose a box at
random and a ball at random from the chosen box, the
probability of getting a red ball is maximized. This maximum
probability is??
a)37/38
b)14/19
c)3/4
d)½
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Answer Posted / sumit kumar
Take one red ball in 1st bag.
put the remaining nine red ball with 10 green ball in other bag
prob of red ball inn ist bag=1/2
prob of red in other bag=(1/2)*(9/19)
the req prob=p(A)+p(B)
=1/2+9/38
=28/38
=14/19
| Is This Answer Correct ? | 122 Yes | 19 No |
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