Question

Considerando os conjuntos A= (1,2,5) B ( 1,3) C (5,6,7,8) e D (7,8,9) determine:
 A) AUB:
B) AUC
C)BUD
D) AUBUD
 Ajude-me pois minha irma esta precisando :/

Answer 1

A= {1,2,3,5}
B={1,2,5,6,7,8}
C={1,3,7,8,9}
D={1,2,3,5,7,8,9}

Answer 2

A) (1,2,3,5)
B) (1,2,5,6,7,8)
C) (1,3,7,8,9)
D) (1,2,3,5,7,8,9)