Probability with or Quiz
10 questions · easy to harder · Probability · score and step-by-step answers
How it works
- 10 questions, about 30 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 2 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. A calculator is on the screen.
- 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
Roll a die, P(1 or 6)Type the answer.
2 Question 2
A bag has 3 red, 5 blue and 2 green marbles, P(red or green)Type the answer.
3 Question 3
Roll a die, P(even or 5)Type the answer.
4 Question 4
Roll a die, P(even or more than 4)Type the answer.
5 Question 5
Roll a die, P(even or prime)- A) P(A or B) = 2
- B) P(A or B) = 1
- C) P(A or B) = 6
- D) P(A or B) = 56
6 Question 6
Pick a card from 52, P(ace or spade)Type the answer.
7 Question 7
Pick a card from 52, P(queen or red)Type the answer.
8 Question 8
Pick a number from 1 to 12, P(odd or multiple of 3)Type the answer.
9 Question 9
Pick a number from 1 to 15, P(multiple of 3 or multiple of 5)- A) P(A or B) = 715
- B) P(A or B) = 815
- C) P(A or B) = 15
10 Question 10
Pick a card from 52, P(jack or black)Type the answer.