SET OPERATIONS

Which of the following contains the combined elements of set A and set B?

• A ∩ B

• A ∪ B

• A - B

• A'

If set A = {1, 2, 3} and set B = {3, 4, 5}, what is A ∩ B?

• {2, 5}

• {3}

• {1, 2, 3, 4, 5}

• {1, 4}

If set A = {1, 2, 3} and set B = {3, 4, 5}, what is A - B?

• {1, 2}

• {3, 4}

• {1, 2, 4, 5}

• {1, 2, 3, 4, 5}

If set A = {1, 2, 3, 4} and set B = {3, 4, 5, 6}, what is A ∪ B?

• {1, 2}

• {5, 6}

• {1, 2, 5, 6}

• {1, 2, 3, 4, 5, 6}

If U = {1, 2, 3, 4, 5, 6} where set A = {1, 2, 3, 4}, what is A' ?

• {1, 2}

• {1, 2, 3, 4}

• {5, 6}

• {1 , 2, 3, 4, 5, 6}

Let C={2, 5, 7, 10} and B={2, 4, 6, 8}. Find C U B.

• {2,4,6,8,10}

• {2,4,5,6,7,8,10}

• {2, 4, 5, 6, 7, 8, 10}

 $A-B=B-A$  

• True

• False

 $A=\left\{2,\ 4\right\};\ B=\left\{2,\ 3,\ 4\right\};\ C=\left\{1,\ 2\right\};\ D=\left\{\phi,0\right\}$  
 $A\cup B\cup C\cup D=?$  

•  $\left\{\phi,\ 0,\ 1,\ 2,\ 3,\ 4\right\}$  

•  $\left\{0,\ 1,\ 2,\ 3,\ 4\right\}$  

•  $\phi$  

 $A=\left\{a,b,e\right\}$  
 $B=\left\{b,c,d\right\}$  
 $C=\left\{a,f\right\}$  

 $\left(A-B\right)\cup C=?$  

•  $\left\{a,\ e,\ f\right\}$  

•  $\left\{a,\ b,\ f\right\}$  

•  $\left\{e,\ f\right\}$  

 $A=\left\{1,\ 2,\ 3,\ 4\right\}$  
 $B=\left\{3,\ 4,\ 5,\ 6,\ 7\right\}$  
 $C=\left\{2,\ 3,\ 4,\ 8,\ 9\right\}$  

 $A\cap B\cap C=?$  

•  $\left\{3,\ 4\right\}$  

•  $\left\{1,\ 2,\ 5,\ 6,\ 7,\ 8,\ 9\right\}$  

•  $\left\{\right\}$