Roll 150 6-sided dice.
How many times would you expect to get anything except 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 4 and smaller than 3? | |
[1] |
A bag has 3 balls with numbers from 5 to 7. You take out 1 ball.
What is the probability of getting a ball with a number more than 4? | |
[1] | A bag has 7 balls with number 7 and 4 balls with a number 5. You take out 1 ball.
What is the probability of getting the ball with the number 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:
What is the probability of rolling a number that is bigger than 4? | |
[1] | The weather forecast says that the chances of rain are 70%. 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] |
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 2? | |
[1] | A bag has 3 red balls and 2 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] |
Roll 1 6-sided die.
What is the probability of getting an even number? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] |
Roll 90 6-sided dice.
How many times would you expect to get a number more than 5? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 100% 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] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 2 or a 3 and a head? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[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:
| | 0.1 | 0.1 | 0.25 | 0.2 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 1? | |
[1] | Flip a coin 14 times.
Each time a head comes up you win $1 and with each tail you lose $4. It costs $21 to play (paid once). How much money would you expect to make altogether? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score less than 0? | |
[2] | Roll 66 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 40%.
What is the probability of getting wet today? | |
[1] |