Question

if A={1;1;2;3;3} then n(A)=​

Answer 1

Answer:

A = {1 , 2, 3}

So, the number of elements in set A , n(A) = 3

We know, P(A) =

So, P(A) = 2³ = 2 × 2 × 2 = 8

Hence, total number of elements in P(A) = 8

Those are {φ, {1},{2},{3},{1,2},{1,3},{2,3},{1,2,3}}