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.
A
{17}
B
{16, 17, 19, 20}
C
{1, 4, 15, 17, 18}
D
{14, 15, 16, 18, 19, 20}
E
{14, 15, 16, 17, 18, 19, 20}
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
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}
Source: Myschool Past Questions Archive (Record #41976)