Cartesian product A × B Quiz
5 questions · easy to harder · Foundations · score and step-by-step answers
How it works
- 5 questions, about 10 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 0 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. No calculator: work it out on paper.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
A = {3, 4}, B = {1, 2}, find n(A × B)Type the answer.
2 Question 2
A = {2, 3, 5}, B = {1, 4}, find n(A × B)Type the answer.
3 Question 3
A = {5, 6}, B = {1, 2, 3, 4}, find n(B × A)Type the answer.
4 Question 4
A = {1, 2, 3, 4}, B = {5, 6, 7}, find n(A × B)Type the answer.
5 Question 5
A = {2, 4, 6, 8}, B = {1, 3}, find n(A × A)Type the answer.