1.

if 'a' is the number of distributions of six different balls into three different boxes . Also, 'b' is the number of distributions of five different balls into three identical boxes . Further , 'c' is the number of distribution of four identical balls into three different boxes. In each case no box remains empty. Then a/(b-2c-1) is equal to

Answer»

3
24
30
4

Solution :a=540
b=25
c=3


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