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if 12 identical balls are to be placed i...

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

A

`55/3(2/3)^11`

B

`55/3(2/3)^10`

C

`220(1/3)^12`

D

`22(11/3)^11`

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