If 10 different balls are to be placed in 4 distinct boxes at random, then the probability that ...
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 :
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(2) math xmlns=http://www.w3.org/1998/Math/MathMLmfracmn965/mnmsupmn2/mnmn10/mn/msup/mfrac/math
(3) math xmlns=http://www.w3.org/1998/Math/MathMLmfracmn945/mnmsupmn2/mnmn10/mn/msup/mfrac/math
(4) math xmlns=http://www.w3.org/1998/Math/MathMLmfracmn945/mnmsupmn2/mnmn11/mn/msup/mfrac/math
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