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rekha married shyam and had 4 sons .Varsha married ajay and had 4 sons.both couples divorced and after that shyam married varsha while ajay married rekha .they too had 3 sons each from their wedlocks .how many selections of 8 children can be made from 14 children so that each of them have same number of sons in the selection?
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4 Answers
393c3*3c3*4c1*4c1 + 3c2*3c2*4c2*4c2 + 3c1*3c1*4c3*4c3 + 4c4*4c4=485
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