Question

Write the subsets of the following off
A= {a,b] B={1,2,3] also write
Power set of A and B.​

Answer 1

Explanation:

CLASSES WILL REMAIN SUSPENDED FOR MONT - I TO CLASS- XII, ON WEDNESDAY, 21-07-2021 & THURSDAY, 22-07-2021 DUE TO

EID-AL-ADHA i.e. BAKRID.

Principal

Answer 2

Answer:

There’s a result in mathematics used for this. It says that a power set B of any set A is a set of all the subsets of A and the number of elements of B will be 2^n where n is the number of elements of A.

So taking your question as an example;

A = {1,2,3}

B : set of all subsets of A

List out all the subsets of A - {1},{2},{3},{1,2},{2,3},{1,3},{1,2,3},{empty set}

Number of elements in A (n) = 3 so 2^3 = 8

So, B = {{1},{2},{3},{1,2},{2,3},{1,3},{1,2,3},{empty set}} and the number of elements are 8.