Q .     If `12` identical balls are to be placed in `3` identical boxes, then the probability that one of the boxes contains exactly `3` balls is


JEE 2015 Mains 4 April
A

`frac {55}{3} (\frac {2}{3} )^{11}`

B

`55 (\frac {2}{3} )^{10}`

C

`220 (\frac {1}{3} )^{12}`

D

`22 (\frac {1}{3} )^{11}`

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