Question

Determinați mulțimile : a) D indice 15 n D indice 18 b) D indice 9 U D ind. 24 c) D ind. 8 U D ind. 10 U D ind. 12

Answer 1

a)D15⌒D18={1,3,4,5,6,7,8,9,10,11,12,13,14,15} b)D9 U D24={1,2,3,4,5,6,7,8,9,10,11,12 13,14,15,16,17,18,19,20,21,22,23,24} c)D8 U D10 U D12={1,2,3,4,5,6,7,8}