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:
| | 0.65 | | 0.2 | 0.05 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 2? | |
[1] | Roll 84 6-sided dice.
How many times would you expect to get a number more than 2? | |
[1] |
We asked a group of girls how many Apples they eat in a week. Here are the results:
What is the probability of the girls to eat exactly 4 Apples in a week? | |
[2] | Flip a coin 16 times.
Each time a head comes up you win $3 and with each tail you lose $4. How much money would you expect to make altogether? | |
[1] |
| A bag has 5 balls with number 1 and 9 balls with a number 6. What will be the average of the numbers of the balls taken out of the bag | |
[1] | Roll 1 6-sided die.
What is the probability of getting an even number? | |
[1] |
A bag has 11 balls with numbers from 1 to 11. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 1? | |
[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 1? | |
[1] |
Roll 48 6-sided dice.
How many times would you expect to get less than or equal to 6? | |
[1] | There are 44 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | green | pink | | Color |
Probability of Type
| | 0.7 | 0.3 | | wagon | sedan | | Type |
What is the probability of a car being a green sedan? | |
[2] | The weather forecast says that the chances of rain are 70%. The chance of remembering your umbrella is 60%. Your chance of being outside today are 60%.
What is the probability of getting wet today? | |
[1] |
A bag has 3 balls with numbers from 2 to 4. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[1] | You roll a 7 sided die and a 6 sided die.
What is the probability of getting 2 on both dice? | |
[1] |
There are 25 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] | A bag has 10 red balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] |
Roll 120 6-sided dice.
How many times would you expect to get a number less than 3? | |
[1] | A bag has 9 red balls and 10 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
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