A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 7? | |
[1] | Flip a coin 12 times.
Each time a head comes up you win $2 and with each tail you lose $3. It costs $22 to play (paid once). How much money would you expect to make altogether? | |
[1] |
A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in exactly 17s?
| |
[2] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] |
| You shoot an arrow at a target. You will either score 10 (10% chance), 30 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | A group of humans did a math test and here are their scores out of 5:
What fraction of the humans score less than 4? | |
[2] |
There are 12 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are more than 3? | |
[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 less than 3? | |
[2] | A bag has 2 balls with numbers from 2 to 3. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score exactly 4? | |
[2] | Roll 36 6-sided dice.
How many times would you expect to get more than 1? | |
[1] |
The chances of feeling like icecream are 50%. The chances of being near an icecream store are 40%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | purple | red | | Color |
Probability of Type
| | 0.7 | 0.3 | | wagon | sedan | | Type |
What is the probability of a car being a red sedan? | |
[2] |
Roll 18 6-sided dice.
How many times would you expect to get an even number? | |
[1] |