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The number of ways of distributing 8 identical balls in 3 distinct boxes so that none of the boxes is empty is
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The correct answer is:
21
21
Number of balls $=8$
number of boxes $=3$
Hence number of ways $={ }^7 C_2=21$.
number of boxes $=3$
Hence number of ways $={ }^7 C_2=21$.
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