Question

Given the set {A, B, C, D, E}, how many permutations and combinations are there of this set of 5 objects taken 2 at a time?

Answer 1

i dont know what permutations are o.o

Answer 2

how many different ways can you arrange 2 of the sets.
A,A
A,B
A,C
A,D
A,E
B,A
.
.
.
.
E,E

5^2 combinations