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:
| | 0.25 | 0.2 | 0.2 | 0.1 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 4? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.2 | 0.5 | | green | red | orange | | Color |
If you choose a random ball from the bag, what is the probability of it being orange? | |
[1] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.9 | | yellow | orange | pink | | Color |
How many orange balls were in the bag? | |
[1] | The weather forecast says that the chances of rain are 60%. The chance of remembering your umbrella is 60%. Your chance of being outside today are 40%.
What is the probability of getting wet today? | |
[1] |
An obstacle course has 1 Fences and 1 Ditches. You have a 50% chance of clearing a Fence and a 100% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[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 | 0.1 | 0.2 | 0.05 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 2? | |
[1] |
Roll 2 6-sided dice.
You add the two numbers. What is the probability of getting 12? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score exactly 3? | |
[2] |
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:
| | 0.2 | 0.05 | 0.05 | | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and smaller than 5? | |
[1] | A group of people were timed running 100m. Here are the results:
people
| | 6 | 1 | 4 | 6 | 5 | | 13 | 14 | 15 | 16 | 17 | | Time |
What fraction of the people run 100m in less than 15s?
| |
[2] |
A group of humans were timed running 100m. Here are the results:
What is the probability of the humans to run 100m in more than 17s?
| |
[2] | A bag has 6 red balls and 9 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting red for the second ball? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 17s?
| |
[2] | Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are even? | |
[1] |
There are 44 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] | Roll 138 6-sided dice.
How many times would you expect to get less than 6? | |
[1] |
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