Question

U= {1,2,3,4,5,6,7,8}; X= {5,6,7}; Y= {1,4,8}; Z = {1,3,5,7} then find: n(X'), n(Y') & n(Z')

Answer 1

Step-by-step explanation:

X' = U-X

= {1,2,3,4,5,6,7,8} - {5,6,7}

= {1,2,3,4,8}

n(X') = 5

n(Y') = n(U) - n(Y)

n(U) = 8

n(Y) = 3

n(Y') = 8-3 = 5

n(Z') = n(U) - n(Z)

n(U) = 8

n(Z) = 4

n(Z') = 8-4 = 4