Question

The set A such that A ∪ {3, 4} = {1, 3, 4, 5} and n(A) is minimum, is

Answer 1

Answer:

The set A such that A ∪ {3, 4} = {1, 3, 4, 5} and n(A) is minimum, is A={1,5}

HERE, n(A)=2, which is minimum possible cardinal number

Answer 2

Answer:

2

Step-by-step explanation:

if we want to get n(A) minimum

then A and{3,4} has ti be disjoined sets then n(A)=2