Cardinality of Sets

Q. What type of sets have the same cardinal number and same elements ?
$\left[1Mark\right]$

Q.

The cardinal number of the set A = {Present Prime minister of India} is

1. n (A) = 2

2. n (A) = 0

3. n (A) = 1

4. n (A) = 3

Q.

The cardinal number of $A=\left\{\right(x:x=5n,n\in W,n<4\}$ is ___.

1. 4

2. 5

3. 2

4. 3

Q.

Cardinal number of the set A = { x: x is neither prime nor composite number} is ____.

1. Infinite

2. 0 (Zero)

3. 1

4. 2

Q.

If A = {set of integers between -2 and 4}, then n(A) = ___.

1. 5

2. 4

3. 7

4. 6

Q.

If A and B are disjoint sets, then the value of $n(A\cap B)$ = ____.

1. 2

2. 0

3. 1

4. 3

Q.

If $M\cap N=\varnothing ,n(M\cup N)=18\text{and}n\left(N\right)=13$, then $n\left(M\right)$ is _____ .

1. 5

2. 18

3. 0

4. 13

Q.

Cardinal number of a null set is ___.

1. 3

2. 0

3. 1

4. 2

Q.

The cardinal number of the set A = {Letters of the word APPLE} is _________.

1. 5
2. 4
3. 0
4. 1

Q.

If P={ P : P is letter in the word "PERMANENT" }. Then n(P) ___.