Question

Sendo que A={1,2,3,4,5} B={3,4,5,6,7} e C={5,6,7,8,9} DETERMINE: a)Aub b)AuC c)BuC d)AuBuC e)AuB f)A interseção com C

Answer 1

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 }