Question

Let N = {S, P, O, M}. List all of the ways that you can select two different members of N. The order in which you select the members is not important.

Answer 1

A
SP, SO, SM, PS, PO, PM, OS, OP, OM, MS, MP, MO

B
SP, SO, SM, PO, PM, OM

C
SS, SP, SO, SM, PP, PS, PS, PM, OO, OS, OP, OM, MM, MS, MP, MO

D
SS, SP, SO, SM, PP, PO, PM, OO, OM, MM

Answer 2

I think its B...