Sample spaces 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.
- 5 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
Flip 2 coins, P(two heads)- A) P(2 heads) = 14
- B) P(2 heads) = 4
- C) P(2 heads) = 1
- D) P(2 heads) = 13
2 Question 2
Flip 2 coins, P(no heads)Type the answer.
3 Question 3
Roll two dice, P(sum is 7)- A) P(sum 7) = 6
- B) P(sum 7) = 16
- C) P(sum 7) = 111
- D) P(sum 7) = 36
4 Question 4
Flip 3 coins, P(exactly 2 heads)Type the answer.
5 Question 5
Flip 3 coins, P(exactly 1 head)- A) P(exactly 1 head) = 38
- B) P(exactly 1 head) = 3
- C) P(exactly 1 head) = 14
- D) P(exactly 1 head) = 8
6 Question 6
Roll two dice, P(sum more than 9)Type the answer.
7 Question 7
Roll two dice, P(sum is 11)- A) P(sum 11) = 111
- B) P(sum 11) = 118
- C) P(sum 11) = 36
- D) P(sum 11) = 2
8 Question 8
Flip 3 coins, P(at least 2 heads)Type the answer.
9 Question 9
Roll two dice, P(not doubles)- A) P(not doubles) = 36
- B) P(not doubles) = 56
- C) P(not doubles) = 6
10 Question 10
Roll two dice, P(sum more than 3)Type the answer.