Sets

If A = {1, 2, 3, 4} and B = {3, 4, 5, 6}, what is A ∪ B?

If U = {1, 2, 3, ..., 10} is the universal set and A = {2, 4, 6, 8}, what is A'?

If A = {x : x is a prime number less than 10} and B = {2, 3, 5}, what is A ∩ B?

Given sets A = {1, 2, 3} and B = {3, 4, 5}, find (A - B) ∪ (B - A).

If A × B = {(1, a), (1, b), (2, a), (2, b)}, what are the sets A and B?

If n(A) = 7, n(B) = 5 and n(A ∩ B) = 3, find n(A ∪ B).

If A ⊆ B and B ⊆ C, which of the following is true?

In a class of 40 students, 25 like cricket, 18 like football, and 10 like both. How many students like neither cricket nor football?

If A = {x | x is a multiple of 3 less than 20} and B = {x | x is a multiple of 4 less than 20}, find A ∩ B.

If A and B are sets such that A ∪ B = A and A ∩ B = B, then which of the following is true?