Question

In how many ways can 6 letters be posted into 4 letters boxes

Answer 1

1st box can get Letters in = 6ways
and
2nd box can get Letters in = 5ways
and
3rd box can get Letters in = 4ways
and
4th box can get Letters in = 3ways

Total ways = 6×5×4×3 = 360 ways

Answer 2

216 times it can be arranged in four boxes