Flip a coin 18 times.
Each time a head comes up you win $1 and with each tail you lose $2. How much money would you expect to make altogether? | |
[1] | Roll 6 6-sided dice.
How many times would you expect to get more than or equal to 2? | |
[1] |
We asked a group of humans how many Burgers they eat in a week. Here are the results:
What fraction of the humans eat exactly 0 Burgers in a week? | |
[2] | Roll 90 6-sided dice.
How many times would you expect to get less than or equal to 5? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 50% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | Roll 90 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than or equal to 4? | |
[1] | A group of people were timed running 100m. Here are the results:
What is the probability of the people to run 100m in exactly 17s?
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[2] |
The weather forecast says that the chances of rain are 20%. The chance of remembering your umbrella is 40%. Your chance of being outside today are 90%.
What is the probability of getting wet today? | |
[1] | Roll 42 6-sided dice.
How many times would you expect to get less than 2? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in exactly 13s?
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[2] | | A bag has 6 balls with number 2 and 8 balls with a number 6. What will be the average of the numbers of the balls taken out of the bag | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 2? | |
[2] | An obstacle course has 1 Fences and 2 Ditches. You have a 50% chance of clearing a Fence and a 80% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
Roll 6 6-sided dice.
How many times would you expect to get more than or equal to 4? | |
[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 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 1 to 3? | |
[1] |
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