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Four boys picked 30 apples. The number of ways in which they can divide then if all the apples are identical isA. 5630B. 4260C. 5456D. None |
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Answer» Correct Answer - C The number of ways to divide n identical things among r persons `=^(n + r -1)C_(r-1)` (By multinomial theorem) n = 30 , r = 40 Req. no of ways `=^(30 + 4 -1)C_(4-1) = ^(33)C_(3) = (33 xx 32 xx 31)/(3 xx 2) = 5456` |
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