Question

if there are 28 relation from a set A = {2,4,6,8} to a set B,then the number of elements in B is

a) 7

b) 14

c) 5

d) 4

solution :​

Answer 1

Answer:

option B is correct answer

Step-by-step explanation:

because I did inck pinky pokey

Answer 2

7

n(A) = 4

n(A x B) = 28

n(A) x n(B) = 28

4 x n(B) = 28

n(B) = 28/4 = 7

hope it helps you