1. 
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}
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Detailed 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}

