I don't understand why this is not valid:
a) Pick one senior partner from 4
b) Pick 2 x further partners from 9 remaining senior & junior partners
4 (senior partner) * 9 (other partner) * 8 (other partner) = 288
Order of selection does not matter, so divide by # of ways to re-arrange 3 partners i.e. 3! = 6
288 / 6 = 48
But this is the wrong answer. Why?
a) Pick one senior partner from 4
b) Pick 2 x further partners from 9 remaining senior & junior partners
4 (senior partner) * 9 (other partner) * 8 (other partner) = 288
Order of selection does not matter, so divide by # of ways to re-arrange 3 partners i.e. 3! = 6
288 / 6 = 48
But this is the wrong answer. Why?
