<PRE><B>Question 359994</B>
a)
4 in one = 6
3 in 1 and 1 in another: 4C3 * 6P2 = 120
2 in 2: 4C2 * 6C2 = 90
2 in 1 and 1 in 2 others: 4P2 * 6C3 = 240
1 in 4 separate ones: 6P4 = 360
.
6+120+90+240+360=816 ways
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c)
6P4=360
.
d)
1 * 5/6 * 4/6 * 3/6 = 60/216 = 5/18
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b) was not clear to me.
.
Please let me know if a) is correct.
.
Ed</PRE>