Question

A={123},=B{456} then number of unordered pair is equal to please if you know then give me answer if you don't know answer and you gave me answer the I will report you​

Answer 1

Answer:

For an example

Explanation:

Given, S={1,2,3,4}

Each element can be put in 3 ways either in subsets or we don't put in any subset.

Total number of unordered pairs of disjoint subsets,

=  

2

3  

n

+1

​

=  

2

3  

4

+1

​

=41