If 10 different balls are to be placed in 4 distinct boxes at random, then the probability that two of these boxes contain exactly 2 and 3 balls is :

Question

${{965} \over {{2^{11}}}}$

${{965} \over {{2^{10}}}}$

${{945} \over {{2^{11}}}}$

${{945} \over {{2^{10}}}}$

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