There are 8 balls in a bag. This is is the probability distribution of their color:
How many green 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:
| | 0.55 | 0.05 | 0.15 | 0.1 | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 5? | |
[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 13s?
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[2] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | | 0.4 | | yellow | purple | orange | | Color |
If you choose a random ball from the bag, what is the probability of it being orange? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 3? | |
[1] | The chances of feeling like icecream are 80%. The chances of being near an icecream store are 40%. There is a 10% chance that you lost all your money.
What is the probability of having icecream? | |
[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 2? | |
[1] | Roll 48 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] |
Flip a coin 8 times.
Each time a Head comes up you win $2. How much money would you expect to make altogether? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What is the probability of the dogs to run 100m in exactly 16s?
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[2] |
| You shoot an arrow at a target. There is a 80% chance of scoring a 20 and a 20% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[1] | You flip a coin and roll a 7 sided die.
What is the probability of getting a 1 and a tail? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | Roll 72 6-sided dice.
How many times would you expect to get more than or equal to 1? | |
[1] |
A bag has 2 red balls, 5 green balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a blue ball or a green ball? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | pink | orange | | Color |
Probability of Type
| | 0.2 | 0.8 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | purple | blue | orange | | Color |
How many orange balls were in the bag? | |
[1] |