Given these sets

Question

Given the sets U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},

 A = {2, 4, 7, 8, 9},

 and B = {0, 5, 6, 7, 9},

 use De Morgan's Laws to find the indicated set. (Enter your answers as a comma-separated list. Enter EMPTY for the empty set.)

(A ∪ B')'

Answer 1

Per DeMorgan's Law:

(A union B')' = A' intersection B

A' = {0,1,3,5,6}

B = {0,5,6,7,8}

A' intersection B = {0,5,6}