Given the sets
u = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
a = {0, 1, 4, 7, 9}, and b = {0, 4, 5, 6, 7}, 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)'

One version of DeMorgan's Laws:  .

In words: "the complement of the intersection of X and Y is equal to the union of their complements."



That last bit is due to the fact that the complement of the complement of A is A.   (A')' = A.

So take the union of A and B'.