We asked a group of boys how many Apples they eat in a week. Here are the results:
What fraction of the boys eat exactly 1 Apples in a week? | |
[2] | A bag has 10 red balls and 4 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | red | green | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or orange? | |
[1] | 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 less than 9? | |
[1] |
We asked a group of boys how many Pizzas they eat in a day. Here are the results:
What is the probability of the boys to eat more than 2 Pizzas in a day? | |
[2] | There are 100 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 orange or blue? | |
[1] |
Flip a coin 2 times.
Each time a head comes up you win $3 and with each tail you lose $3. How much money would you expect to make altogether? | |
[1] | A wheel has 10 sections, 2 of each color.
What is the probability of getting orange? | |
[1] |
The weather forecast says that the chances of rain are 80%. The chance of remembering your umbrella is 70%. Your chance of being outside today are 40%.
What is the probability of getting wet today? | |
[1] | A bag has 4 red balls, 8 blue balls and 9 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting red for the last ball? | |
[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 12 6-sided dice.
How many times would you expect to get more than or equal to 3? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 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:
| | 0.6 | 0.1 | 0.15 | 0.1 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 4? | |
[1] |
A bag has 2 balls with numbers from 5 to 6. You take out 1 ball.
What is the probability of getting a ball with a number less than 4? | |
[1] | Roll 96 6-sided dice.
How many times would you expect to get anything except 5? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | blue | purple | red | | Color |
How many purple balls were in the bag? | |
[1] | The weather forecast says that the chances of rain are 20%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[1] |
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