Reto # 1: https://github.com/vickiavola/solidity-eth-challenge/blob/main/Reto%20%23%201, Reto # 2: https://github.com/vickiavola/solidity-eth-challenge/blob/main/Reto%20%23%202, Reto # 3 Reto # 4
Reto # 1: https://github.com/vickiavola/solidity-eth-challenge/blob/main/Reto%20%23%201, Reto # 2: https://github.com/vickiavola/solidity-eth-challenge/blob/main/Reto%20%23%202, Reto # 3 Reto # 4