Flip a coin 12 times.
Each time a head comes up you win $3 and with each tail you lose $1. It costs $15 to play (paid once). How much money would you expect to make altogether? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] |
There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.5 | 0.3 | | red | orange | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it being yellow? | |
[1] | Roll 24 6-sided dice.
How many times would you expect to get more than or equal to 6? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 40% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are odd? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in more than 15s?
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[2] | A bag has 6 balls with numbers from 4 to 9. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 4? | |
[1] |
There are 80 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 not being red or purple? | |
[1] | The chances of feeling like icecream are 50%. The chances of being near an icecream store are 60%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] |
We asked a group of humans how many Icecreams they eat in a week. Here are the results:
What fraction of the humans eat exactly 2 Icecreams in a week? | |
[2] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 3? | |
[2] |
A bag has 4 red balls and 7 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | Roll 60 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | yellow | blue | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | purple | yellow | | Color |
Probability of Type
| | 0.2 | 0.8 | | sedan | wagon | | Type |
What is the probability of a car being a yellow wagon? | |
[2] |
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