Given that the universal set U={14,15,16,17,18,19,20}, J ={16,19,20} and K= {14,15,18}, find (J’ ∩ K’)1.
- {17}
- {16, 17, 19, 20}
- {1, 4, 15, 17, 18}
-
{14, 15, 16, 18, 19, 20}
- {14, 15, 16, 17, 18, 19, 20}
The correct answer is: D
Explanation
U = {14,15,16,17,18,19,20}
J' = {14,15,17,18}
K' = {16,17,19,20}
(J' \(\cap\) K') = {17}
(J' \(\cap\) K')' = {14,15,16,18.19,20}