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 smaller than or equal to 1? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are 1 or 4? | |
[1] |
A wheel has 8 green sections and 2 blue sections.
What is the probability of getting blue? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | red | green | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being yellow or red? | |
[1] |
Roll 18 6-sided dice.
How many times would you expect to get anything except 5? | |
[1] | Flip a coin 6 times.
Each time a head comes up you win $1 and with each tail you lose $3. It costs $9 to play (paid once). How much money would you expect to make altogether? | |
[1] |
The chances of feeling like icecream are 80%. The chances of being near an icecream store are 60%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | The weather forecast says that the chances of rain are 90%. The chance of remembering your umbrella is 40%. Your chance of being outside today are 60%.
What is the probability of getting wet today? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score exactly 3? | |
[2] | Roll 72 6-sided dice.
How many times would you expect to get more than 3? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.4 | 0.3 | | purple | red | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being yellow? | |
[1] | We asked a group of humans how many Pizzas they eat in a week. Here are the results:
What is the probability of the humans to eat exactly 4 Pizzas in a week? | |
[2] |
| You shoot an arrow at a target. There is a 80% chance of scoring a 10 and a 20% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What is the probability of the dogs to score more than 2? | |
[2] | A bag has 9 red balls, 8 blue balls and 3 yellow 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] |
Roll 72 6-sided dice.
How many times would you expect to get more than 1? | |
[1] |