There are 20 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] | There are 110 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[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:
| | 0.5 | 0.1 | 0.1 | 0.2 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 1? | |
[1] | A bag has 9 red balls, 9 green balls and 5 blue balls. You take out 1 ball.
What is the probability of getting a green ball? | |
[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:
What is the probability of rolling a number that is bigger than or equal to 3? | |
[1] | A bag has 3 balls with number 3 and 7 balls with a number 4. You take out 1 ball.
What is the probability of getting the ball with the number 4? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What fraction of the people score more than 0? | |
[2] | A bag has 3 red balls and 8 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] |
A wheel has 10 sections, each a number on it from 1 to 10. If you spin an even number you win that amount of dollars, if you spin an odd number you lose.
What prize do we expect to get if we spin the wheel? | |
[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:
| | 0.2 | 0.2 | 0.05 | 0.25 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 3? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] | The weather forecast says that the chances of rain are 80%. Your chance of being outside today is 40%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[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:
What is the probability of rolling a number that is bigger than 4 or smaller than 5? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.6 | | red | orange | green | | Color |
How many orange balls were in the bag? | |
[1] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | red | yellow | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or yellow? | |
[1] | Flip a coin 4 times.
Each time a head comes up you win $2 and with each tail you lose $2. It costs $2 to play (paid once). How much money would you expect to make altogether? | |
[1] |
There are 18 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[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 smaller than 3? | |
[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:
What is the probability of rolling a number that is bigger than 1? | |
[1] |