Question

6. Sendo A = (1, 2, 3, 4, 5, 6, 7, 8, 9), B = (1, 8, 9) e
C= (5, 8, 9), determine:

B - C

C - B

A - ( B U C)


B
C
A



C
C
A



(B U C)
C
A


URGENTE!!

Answer 1

Resposta:

A={1,2,3,4,5} B={3,4,5,6,7} e C={5,6,7,8,9}

a)A∪B = { 1 , 2 , 3 , 4 , 5 , 6 , 7 }

b)A∪C = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 }

c)B∪C = { 3 , 4 , 5 , 6 , 7 , 8 , 9 }

d) A∪B∪C = { 1 , 2 , 3 , 4 , 5, 6 , 7 , 8 , 9 }

e) A∪B = { 1 , 2 , 3 , 4 , 5 , 6 , 7 }

f)A∩C = { 5 }