Question

 If Universal Set U = {90, 91 , 92 , 93 , 94, 95 , 96 , 97 , 98, 99 , 100} (10)

 A = {90, 92, 94, 96, 98, 100}, 

 B= {91, 93, 95, 97, 99}, 

 C = {90, 94, 98}

 1.4.1 What is (A ∩ C)c 

 1.4.2 What is(B ∪ C)c

Answer 1

1.4.1

$$A\cap C=\{90,94,98\}$$

$$(A\cap C)^C=\{91 , 92 , 93 , 95 , 96 , 97, 99 ,100\}$$

1.4.2

$$B\cup C=\{90, 91 , 93 , 94, 95 , 97 , 98, 99\}$$

$$(B\cup C)^C=\{92, 96,100\}$$