Roll 84 6-sided dice.
How many times would you expect to get more than or equal to 1? | |
[1] | Roll 120 6-sided dice.
How many times would you expect to get a number less than 1? | |
[1] |
You roll a 3 sided die and a 4 sided die.
What is the probability of getting 4 on both dice? | |
[1] | A bag has 9 balls with number 8 and 5 balls with a number 9. You take out 1 ball.
What is the probability of getting the ball with the number 9? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score exactly 3? | |
[2] | A bag has 9 red balls and 7 blue balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] | Roll 60 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] |
Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are more than 3? | |
[1] | A bag has 9 red balls, 3 green balls and 3 blue balls. You take out 1 ball.
What is the probability of NOT getting a red ball? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than 2? | |
[1] | Flip 1 coin.
What is the probability of getting a tail? | |
[1] |
A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.05 | 0.25 | | 0.1 | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 4 to 5? | |
[1] | A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.15 | 0.2 | 0.15 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4? | |
[1] |
A group of people were timed running 100m. Here are the results:
What is the probability of the people to run 100m in exactly 15s?
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[2] | | You shoot an arrow at a target. There is a 20% chance of scoring a 20 and a 10% chance of scoring a 30 and a 70% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.15 | 0.2 | 0.2 | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 1 or 5? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 50% chance of clearing a Fence and a 80% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
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