Question

4- Sendo A = { 0,1,2,3,4}, escreva todos os subconjuntos de A que tem 2 elementos

Answer 1

A = {0,1,2,3,4}
A' = {(0,1), (0,2), (0,3), (0,4), (1,2), (1,3), (1,4), (2,3), (2,4), (3,4)}