| You shoot an arrow at a target. You will either score 10 (30% chance), 40 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 100% chance of clearing a Fence and a 50% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
A bag has 10 red balls and 5 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | There are 14 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] |
We asked a group of people how many Apples they eat in a week. Here are the results:
What is the probability of the people to eat exactly 3 Apples in a week? | |
[2] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.8 | 0.2 | | pink | purple | | Color |
Probability of Type
| | 0.3 | 0.7 | | wagon | sedan | | Type |
What is the probability of a car being a purple wagon? | |
[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:
What is the probability of rolling a number that is bigger than 1 or 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 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:
| | 0.25 | 0.15 | 0.25 | 0.15 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 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:
| | 0.25 | 0.2 | 0.25 | 0.2 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 or smaller than 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:
| | 0.25 | 0.15 | 0.15 | 0.2 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 1? | |
[1] | Flip a coin 2 times.
Each time a Tail comes up you win $2. It costs $4 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:
| | 0.1 | 0.25 | 0.25 | 0.2 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 2? | |
[1] | The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 80%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] |
Roll 84 6-sided dice.
How many times would you expect to get anything except 1? | |
[1] | Roll 1 6-sided die.
What is the probability of getting a 5? | |
[1] |
A bag has 6 balls with number 6 and 5 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 1? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] |
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