Number of ways in which 30 identical thi...

Number of ways in which 30 identical things are distributed among six persons is a`.^17C_5` if each gets odd number of things b`.^16C_11` if each gets odd number of things c`.^14C_5` if each gets even number of things (excluding 0) d`.^15C_10` if each gets even number of things (excluding 0)

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