For example, how come $4 \choose 3$ (from 4 dice, choose 3 to be the same) can relate to the list:
d, s, s, s
s, d, s, s
s, s, d, s
s, s, s, d
Where s = same number, and d = different number? Shouldn't this be a permutations problem?
For example, how come $4 \choose 3$ (from 4 dice, choose 3 to be the same) can relate to the list:
d, s, s, s
s, d, s, s
s, s, d, s
s, s, s, d
Where s = same number, and d = different number? Shouldn't this be a permutations problem?