Question

☛Give the revision notes of
☛Exercise :- 1st
☛ ""SETS"".

Class 11th.

Answer 1

heya......

answer is
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empty sets - the set which do not contain any element
singleton set - a set having only one element
finite set - a set having finite number of elements
infinite set - a set having infinite number of elements
equivalent set - a set whose cardinal number is same
equal sets - a set having same elements
power set - s collection of subsets

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hope it helps ^_^

Answer 2

heya!!

here is your answer ⤵️⤵️

SET : a set is well defined collection if distinct objects.

==> It is denoted by a capital letter.

A set is described in two forms :

● Roster form

in this form , all the elements of the set are listed.

example: A= {0, 1,2,3.....}.

• Set builder form

In this form, all the elements are described by a rule.

example : B is set of all perfect squares.

● Cardinal Number of set :

The no.of elements which are present in a finite set is called cardinal no.of set.

example : A = {1,2,3,4,5,6}n(A) = 6.

• Null set :
If a set has no element in it, then the set is said to be null set.

example : B is a set of even prime no's which is greater than 2 is a null set.

• Singleton set :

If a set contains only one element in it, then it is called singleton set.

example : P is a set of even primes is a singleton set.

• Finite set :

A set with finite no.of elements is called finite set.

example : Q is a set of letters of the word CHAITANYA is a finite set.

Infinite set :

A set with infinite numbers of elements is called infinite set.

example : set of natural numbers.

• Subset : if every element of a set A is also an element of set B, Then A is subset of B.

• Power set :

The set of all possible subsets of given is known as power set.



hope my answer helps you