Union of Sets

The union of set A and set B,  $A\cup B$ , is the set consists of 

• all the elements in set A and set B.

• the common elements in set A and set B.

• all the elements in set A but not in set B.

• all the elements in set B but not in set A.

The Venn diagram for  $A\cup B$  is represented in green as

• 
• 
• 
• 

The elements in P∪Q are

• {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

• {0, 1, 2, 3, 8, 9, 10}

• {4, 5, 6, 7}

• { }

Base on the Venn diagram given, the  $n\left(P\cup Q\right)$  is 

• 0

• 1

• 2

• 4

Base on the Venn diagram given,  $P\subset Q$  . Hence,  $P\cup Q$  can be represents by

• P

• Q

•  $\phi$  

• None of the above

Base on the Venn diagram, which of the following represents  $B\cup C$  

• {1, 9}

• {1, 4, 9, 16)

• {1, 2, 6, 8, 9, 10, 12, 14, 18}

• {1, 2, 4, 6, 8, 9, 10, 12, 14, 16, 18}

Base on the Venn diagram,  $n\left(X\cup Y\right)=$  

• 0

• 3

• 6

• 10

Base on the Venn diagram, which of the region below shows  $A\cup B\cup C$  ?

• I, II, III, IV, V, VI

• II, III, IV, V, VI, VII

• I, II, III, IV, V, VI, VII

• I, II, III, IV, V, VI, VII, VIII

Base on the Venn diagram, which of the following is false?

• $Q\subset P\cup R$

• $P\subset P\cup R$

• $R\subset Q\cup R$

• $Q=P\cup R$

Given that   $\xi=\left\{x:x\ is\ an\ integer\ between\ 10\ and\ 20\right\}$ , 
P = {even number}
Q = {prime number} and
R = {perfect square}.

Find  $n\left(P\cup Q\cup R\right)$  .

• 0

• 1

• 8

• 11