Let A = {2, 3, 4, 5, 6, 7} B = {2, 4, 7, 8) C = {2, 4}. Show with an example that if the number of elements in a set is ânâ, then (a) P = {4, 6, 8} Q = {1, 3, 9} R = {0, 2, 5} S = {7} (c) Prime numbers less than 10, even numbers less than 10, multiples of 3 less than 10.