The weather forecast says that the chances of rain are 90%. The chance of remembering your umbrella is 70%. Your chance of being outside today are 90%.
What is the probability of getting wet today? | |
[1] | A bag has 6 balls with numbers from 2 to 7. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] |
A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 11? | |
[1] | Roll 108 6-sided dice.
How many times would you expect to get anything except 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:
| | 0.15 | 0.05 | 0.2 | | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 2? | |
[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 4 or 5? | |
[1] |
Roll 144 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score more than 3? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.2 | 0.8 | | red | orange | | Color |
Probability of Type
| | 0.4 | 0.6 | | sedan | wagon | | Type |
What is the probability of a car being a red sedan? | |
[2] | There are 110 balls in a bag. This is is the probability distribution of their color:
How many green 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:
| | 0.25 | 0.15 | 0.15 | 0.2 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 4? | |
[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:
| | 0.55 | 0.15 | 0.05 | 0.25 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] |
Roll 78 6-sided dice.
How many times would you expect to get more than 6? | |
[1] | A bag has 2 red balls, 5 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] |
A bag has 9 balls with number 8 and 9 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 8? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | green | purple | | Color |
Probability of Type
| | 1 | | sedan | wagon | | Type |
What is the probability of a car being a purple sedan? | |
[2] |