Question

fie multimile A={ 11,13,21,31,49,55} B ={13,31,48,55 si C={11,13,21,48} Aflati: a) A U B; E) C U B; b) C "u" intors B; f) C u intors B; c) A U C; G) A "U" INTORS ( B U C) va rog

Answer 1

A U B {11 13 21 31 48 49 55} B U C { 11 13 21 31 48 55} C ,, U.'' B {13 48 } A U C{ 11 13 21 31 48 49 55}