Sets

 $\left\{\alpha:\alpha\in Z^-,-11<\alpha<-15\right\}$  can be written in tabular form as------------

• {-12,-13,-14}

• {12,13,14}

•  $\phi$  

• {-11,-12,-13,-14,-15}

Which of the following are NOT overlapping sets?

• A={2,4,6} , B={4,6,8}

• P={x,y,z},Q={w,x,y,z}

• A={10,20,30,40}, B={20,40,60,80,100}

• P={9,18,27,36} , Q={6,9,12,15}

For any sets A & B, which of the following is not TRUE?

• AUB=BUA

• 
  

  $A\cap B=B\cap A$

• $A'=U-A$

• $A-B=B-A$

 $44\notin A,\ if$  

•  $A=\left\{x:x\in N,40<x<50\right\}$  

• A=Set of multiples of 4

• A=set of multiples of 11

•  $A=\left\{x:x\in P,x\le50\right\}$  

If A={1,2,3,4} & B={1,2,3,4,5,6}, Which of the following operation results in a null set?

• $A\cup B$

• $B-A$

• $A-B$

• $A\cap B$

For any set A , Which of the following is a null set?

•  $A\cup\phi$  

•  $A\cap\phi$  

•  $A-\phi$  

• A'

If sets A & B are two disjoint sets, which of the following operations results in the null set?

• $AUB$

• $A\cap B$

• $A-B$

• $B-A$

Which of the following are NOT superset-subset?

• Natural Numbers & Even numbers

• Integers & Whole numbers

• Whole numbers & Prime numbers

• Even numbers and Prime numbers

 $A=\left\{x:x\in P,31<x<50\right\}$  then n(A)=_______

• 3

• 4

• 5

• 6

Which of the following are TRUE?

• $\left\{0\right\}=\phi$

• $\phi=\left\{\ \right\}$

• $\left\{\phi\right\}\ is\ an\ empty\ set.$

• $n\left(\phi\right)=0$