There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.3 | 0.1 | | orange | purple | pink | | Color |
How many purple 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:
What is the probability of rolling a number that is bigger 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:
| | 0.65 | | 0.1 | 0.2 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 5? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 16s?
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[2] |
A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 8? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | blue | pink | yellow | | Color |
How many yellow balls were in the bag? | |
[1] |
A wheel has 8 sections, each a number on it from 1 to 8. If you spin an even number you win that amount of dollars, if you spin an odd number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] | A wheel has 14 sections, each a number on it from 1 to 14. If you spin an even number you win that amount of dollars, if you spin an odd number you lose.
What prize do we expect to get if we spin the wheel? | |
[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 or equal to 1? | |
[1] | There are 50 balls in a bag. This is is the probability distribution of their color:
If you choose a random ball from the bag, what is the probability of it being red or blue? | |
[1] |
A bag has 10 red balls and 9 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What is the probability of the kids to score more than 0? | |
[2] |
The weather forecast says that the chances of rain are 20%. 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] | Flip a coin 14 times.
Each time a head comes up you win $4 and with each tail you lose $2. It costs $28 to play (paid once). How much money would you expect to make altogether? | |
[1] |
A wheel has 7 blue sections and 5 red sections.
What is the probability of getting blue? | |
[1] | There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | red | blue | pink | | Color |
If you choose a random ball from the bag, what is the probability of it being blue? | |
[1] |
Roll 78 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] |
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