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Mathematics 8 Online
OpenStudy (pratyush5):

Total number of ways in which n^2 number of identical balls can be put in n numbered boxes (1,2,3,......,n) such that box number i contains atleast i number of balls.

OpenStudy (sparrow2):

ok first we have to put 1,2,3...n balls relevant to number this is :n(n+1)/2

OpenStudy (pratyush5):

GOt it :) Then ?

OpenStudy (sparrow2):

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