Question

Пусть А={2, 3, 4, 8}, В={1, 3, 5, 7, 9}, С={1, 2, 3, 4, 14, 5}

Answer 1

 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 17, 19},  = {1, 3, 5, 7, 9}.