Empty Set

Q.

A set having no element is called the empty set.

1. True

2. False

Q. State whether the following statement is True or False.
All prime numbers are odd.

1. True
2. False

Q. State whether the following statement is True or False.
$2$ is the only even prime number.

1. True
2. False

Q.

If $P=\{x:x+3=2andx\in N\}$ then the set P is ________.

1. an empty set

2. an infinite set

3. a finite set

4. not a set

Q.

If sets A and B are defined as

A = $\left\{\right(x,y):y$ = $e^x,x\in R\}$

B = $\left\{\right(x,y):y$ = $x,x\in R\}$, then

1. 

2. 

3. 

4. 

Q. The line which intersects two or more lines at distinct points is called transversal.If true enter 1 else 0.

Q.

If P = {Triangles with 4 sides} then set P is an empty set

Q. $56\times 57=$ ___

Q. A = {$\varphi$} is a/an ____ set.

1. empty
2. singleton
3. finite
4. infinite

Q. Which of the following set is empty?

1. $\{x\in R|2x+1=3\}$
2. $\{x\in R|x^2=9and2x=6\}$
3. $\{x\in R|x^2=9and2x=4\}$
4. $\{x\in R|x+4=4\}$

Q.

State which of the following are null or empty sets?

$\left\{Evennumberwhichareprime\right\}$

Q. State whether given set is empty or not?
Set of even prime numbers

Q.

State whether the given set is finite or infinite.

$\mathrm{The}\mathrm{set}\mathrm{of}\mathrm{teachers}\mathrm{in}\mathrm{your}\mathrm{school}.$

Q. The following is example of empty set:
$\{x:x^2-2=0$ and x is rational$\}$.

1. True
2. False

Q. $203\times 205=$ ___

Q. Which of the following sets are empty?

1. $A=\left\{\text{Prime numbers between 19 and 23}\right\}$
2. $B=\{x:x\text{is an odd integer divisible by 2}\}$
3. $C=\{x:-10<x<2,x\text{is a natural number}\}$
4. $D=\{x:x\text{is an even prime number greater than 2}\}$

Q. The following is an example of empty set:
$\{x:x$ is a natural number, $x<8$ and simultaneously $x>12\}$.

1. True
2. False

Q. The following is an example of empty set:
$\{x:x$ is a point common to any two parallel lines$\}$.

1. True
2. False

Q. The set of odd prime numbers is the empty set.

1. True
2. False

Q.

Which of the following is an empty set

1. 

2. 

3. 

4. 

Q.

State whether following set is finite or infinite.

$C=\{.......,-3,-2,-1,0,1,2,3,..........\}$

Q. Which of the following sets is empty?
Set of odd numbers between $7$ and $19$.

Q. Which of the following sets is empty?
Set of counting numbers between $5$ and $6$

Q. If 2a = 6, then a = 3.

1. True
2. False