Factorials 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.
- 3 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
How many ways can 4 cards be put in a row- A) ways = 4
- B) ways = 256
- C) ways = 24
2 Question 2
Calculate 5!Type the answer.
3 Question 3
How many ways can 4 friends be lined up in a row- A) ways = 256
- B) ways = 24
- C) ways = 4
4 Question 4
Calculate 7!Type the answer.
5 Question 5
How many ways can 6 runners be lined up in a row- A) ways = 720
- B) ways = 46656
- C) ways = 6
6 Question 6
Calculate 6!/4!Type the answer.
7 Question 7
Calculate 8!/6!Type the answer.
8 Question 8
Calculate 10!/8!Type the answer.
9 Question 9
Calculate 6!/3!Type the answer.
10 Question 10
How many ways can 7 photos be arranged in a rowType the answer.