JEE Main 2011 Mathematics question
This question has Statement −1 and Statement −2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement - 1 : The number of ways of distributing 10 identical balls in 4 distinct boxes such that no box is empty is Statement-2: The number of ways of choosing any 3 places from 9 different places is .
Answer: (4)
Solution
Placing 10 identical balls in a row leaves 9 gaps; choosing 3 of these 9 gaps to place dividers splits the balls into 4 non-empty groups. So the
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