Types of Sets

Find out whether the given set is finite or not:

Reciprocals of all positive integers.

Find out whether the given set is finite or not:
 Students of all the schools in the world.

Find out whether the given set is finite or not:
Colours in a rainbow.
 

Examine whether any of the following sets is the null set:

$\mathrm{C}=\{x\mid x=x+1\}$

Examine whether any of the following sets is the null set:

$B=\{x\mid x+5=5\}$

Examine whether any of the following sets is the null set:

$A=\left\{x\mid x^2=16, 2x=6\right\}$

Find out whether the given set is finite or not:

Family or all circles through three given distinct points.

Find out which of the following sets are finite:

Family of all circles passing through two given distrinct points.

Find out whether the given set is finite or not:

Family of all straight lines passing through a fixed point.

Find out whether the given set is finite or not:

All isosceles triangles in a plane.

Find out whether the given set is finite:

All points on a straight line.

If set $A$ is empty set then $n\left[P\right[P\left[P\right(A\left)\right]\left]\right]$, where $P\left(A\right)$ is the power set of $A$ is

Which of the following represents the above pair of sets?

A is a set containing all the letters in the word FLOW                      
B is a set containing all the letters in the word FOLLOW
A and B are _____.
 

Which of the following represent the null set?

How many elements are there in the set, N = {Ø}?

Babu made 2 equivalent sets using the given balls. Which of the following pairs of sets are equivalent?

Balaji wanted to make a pair of equal sets using green and red balls. Which of the following pairs of sets is equal?

M = {a,b,c,d,e}
N ={A,B,C,D,E}
M and N are _______ sets.

Which of the following pairs of sets is equivalent?