Roll a die 84 times.
How many times would you expect to get a 4? | |
[1] | There are 35 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] |
Roll 78 6-sided dice.
How many times would you expect to get less than 4? | |
[1] | A bag has 3 balls with numbers from 3 to 5. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 5? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than 6? | |
[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 | 0.05 | 0.2 | | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 or smaller than 4? | |
[1] |
Roll 2 6-sided dice.
You add the two numbers. What is the probability of getting 2? | |
[1] | A bag has 7 red balls, 4 blue balls and 9 yellow balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
A group of dogs were timed running 100m. Here are the results:
What is the probability of the dogs to run 100m in exactly 15s?
| |
[2] | There are 12 balls in a bag. This is is the probability distribution of their color:
| | 0.75 | 0.25 | | purple | yellow | | Color |
How many yellow balls were in the bag? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | orange | green | pink | | Color |
How many orange balls were in the bag? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What is the probability of the girls to score exactly 3? | |
[2] |
A bag has 6 red balls, 10 blue balls and 7 yellow balls. You take out a yellow ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are even? | |
[1] |
Roll 126 6-sided dice.
How many times would you expect to get less than 5? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in less than 13s?
| |
[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 | 0.2 | 0.2 | 0.05 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 4? | |
[1] |