A wheel has 6 sections, each has a reward in dollars, from $1 through to $6.
What prize do we expect to get if we spin the wheel? | |
[1] | Roll 42 6-sided dice.
How many times would you expect to get a number more than 4? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score more than 1? | |
[2] | A bag has 11 balls with numbers from 2 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 1? | |
[1] |
There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.9 | 0.1 | | | green | yellow | orange | | Color |
How many orange balls were in the bag? | |
[1] | There are 14 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |
There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.2 | 0.2 | | red | blue | purple | | Color |
How many blue balls were in the bag? | |
[1] | Roll 66 6-sided dice.
How many times would you expect to get less than 5? | |
[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:
| | 0.3 | 0.25 | 0.05 | 0.15 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 4? | |
[1] | A bag has 9 balls with numbers from 3 to 11. You take out 1 ball.
What is the probability of NOT getting the ball with the number 10? | |
[1] |
The weather forecast says that the chances of rain are 50%. Your chance of being outside today is 80%. The chance of remembering your umbrella is 40%.
What is the probability of getting wet today? | |
[1] | Flip 1 coin.
What is the probability of getting a head? | |
[1] |
Roll 18 6-sided dice.
How many times would you expect to get less than 1? | |
[1] | | You shoot an arrow at a target. You will either score 20 (30% chance), 30 (10% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 5 balls with numbers from 3 to 7. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 4? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.7 | 0.3 | | yellow | orange | | Color |
Probability of Type
| | 0.5 | 0.5 | | sedan | wagon | | Type |
What is the probability of a car being a orange wagon? | |
[2] |
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 3? | |
[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:
| | 0.05 | 0.25 | 0.05 | 0.65 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 3? | |
[1] |
|