Question

If there are 1024 relations from a set A = {1,2,3,4,5} to a set B,Then the number of elements in B is

Answer 1

Answer:

n(A) = 5

n(B) = x

n(A x B) = 1024 = 2¹⁰

2^5x = 2¹⁰

⇒ 5x = 10

⇒ x = 2