Roll 120 6-sided dice.
How many times would you expect to get less than 4? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 90% 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] |
We asked a group of boys how many Apples they eat in a week. Here are the results:
What is the probability of the boys to eat exactly 4 Apples in a week? | |
[2] | Flip a coin 10 times.
Each time a head comes up you win $4 and with each tail you lose $1. It costs $16 to play (paid once). How much money would you expect to make altogether? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 4 or a 3 and a head? | |
[1] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.5 | | orange | green | blue | | Color |
If you choose a random ball from the bag, what is the probability of it not being blue or green? | |
[1] |
A group of humans were timed running 100m. Here are the results:
humans
| | 5 | 1 | 1 | 4 | 3 | | 13 | 14 | 15 | 16 | 17 | | Time |
What is the probability of the humans to run 100m in exactly 15s?
| |
[2] | The weather forecast says that the chances of rain are 40%. The chance of remembering your umbrella is 60%. Your chance of being outside today are 90%.
What is the probability of getting wet today? | |
[1] |
A wheel has 5 green sections and 7 yellow sections.
What is the probability of getting green? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 2? | |
[1] |
We asked a group of boys how many Pillows they eat in a month. Here are the results:
What fraction of the boys eat exactly 2 Pillows in a month? | |
[2] | A wheel has 14 sections, each a number on it from 1 to 14. If you spin an odd number you win that amount of dollars, if you spin an even number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 4 or a 4 and a head? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | | 0.7 | | red | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being green? | |
[1] |
The chances of feeling like icecream are 70%. The chances of being near an icecream store are 50%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | Flip a coin 8 times.
Each time a Tail comes up you win $2. It costs $8 to play (paid once). How much money would you expect to make altogether? | |
[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 smaller than 1? | |
[1] |