Sets

Question 1 of 10

If A ∩ B = { }, then A and B are disjoint.

Question 2 of 10

In a class, 24 pupils play football, 25 play volleyball and 6 play both. How many play at least one of the games? ___

Question 3 of 10

U = {1, 2, …, 12}, A = {even numbers} and B = {multiples of 4}. Find n(A ∩ B).

Question 4 of 10

A ∪ B contains only the elements common to A and B.

Question 5 of 10

Which set is infinite?

Question 6 of 10

U = {1, 2, …, 10}, A = {even numbers} and B = {multiples of 5}. Find n(A).

Question 7 of 10

U = {1, 2, …, 12}, A = {even numbers} and B = {multiples of 3}. Find n(A′).

Question 8 of 10

If A = {1, 2, 3, 4, 5} and B = {2, 4, 6, 8}, find A ∩ B.

Question 9 of 10

In a class, 21 pupils play football, 21 play volleyball and 7 play both. How many play at least one of the games? ___

Question 10 of 10

If A = {a, e, i, o, u}, n(A) is