Question

If F(n) denotes the set of all divisors of a natural
number n, what is the least value of y satisfying
[F(20) n F(16)] c F(y)] ?
(a) 2 (b) 1
(c) 4 (d) 6
PLS explain in brief ​

Answer 1

Answer:

Y= 4 is the correct answer because 20-16