Question

1.Given set : X = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20}, Y = {x | x is a prime number less than 20}, Z = {3, 6, 9, 12, 15, 18}. Find which of following is considered as universal set for all the three sets given above and why? a)A={2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14} b) B = {x | x is a natural number less than 25} c) C = {x | x is a prime number less than 23}​

Answer 1

Answer:

the anwer is Tati means Tati