| You shoot an arrow at a target. There is a 10% chance of scoring a 10 and a 20% chance of scoring a 40 and a 70% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] | Flip 3 coins.
What is the probability of getting 3 heads? | |
[1] |
A bag has 6 balls with number 8 and 5 balls with a number 7. You take out 1 ball.
What is the probability of getting the ball with the number 8? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.2 | 0.2 | | green | red | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being red or purple? | |
[1] |
We asked a group of boys how many Icecreams they eat in a day. Here are the results:
What is the probability of the boys to eat exactly 4 Icecreams in a day? | |
[2] | Roll 12 6-sided dice.
How many times would you expect to get more than 3? | |
[1] |
There are 8 balls in a bag. This is is the probability distribution of their color:
How many blue 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 3 and smaller than 5? | |
[1] |
A bag has 10 balls with numbers from 2 to 11. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] | Roll a die 66 times.
How many times would you expect to get a 3? | |
[1] |
An obstacle course has 1 Fences and 2 Ditches. You have a 80% chance of clearing a Fence and a 100% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | Roll 138 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
Roll 6 6-sided dice.
How many times would you expect to get anything except 5? | |
[1] | A group of humans were timed running 100m. Here are the results:
humans
| |
| Time | 13 | 4 | | 14 | 2 | | 15 | 6 | | 16 | 4 | | 17 | 3 |
What is the probability of the humans to run 100m in exactly 17s?
| |
[2] |
A bag has 9 balls with numbers from 2 to 10. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 7? | |
[1] | A bag has 5 red balls, 9 green balls and 4 blue balls. You take out 1 ball.
What is the probability of NOT getting a green ball? | |
[1] |
We asked a group of humans how many Peaches they eat in a week. Here are the results:
What fraction of the humans eat more than 0 Peaches in a week? | |
[2] |