Question

If A = {1, 2, 3, 4, 5} and B = {5, 6, 7, 8}, then n(B) and n(A)​

Answer 1

If A = {1, 2, 3, 4, 5} and B = {5, 6, 7, 8}, then

n(A) = number of digits in set A = 5

n(B) = number of digits in set B = 4