Question

if A={k} and the difference between no.of subsets of power sets of A,B is 2.then what type of set is B and what is n (B)?​

Answer 1

Answer:

n(B) is 4

Step-by-step explanation:

If A={K} ,A subsets are {} and {K} , that is 2. n^2 where n is element of B. so we can write equation as n^2-2 = 2 ( n(B)- n(A) ) n^2 = 4 n^2=2^2 by taking both side square root we get n= 2 so,B= 2. B is finite set with two elements