The weather forecast says that the chances of rain are 40%. Your chance of being outside today is 60%. The chance of remembering your umbrella is 60%.
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 3? | |
[1] |
There are 40 balls in a bag. This is is the probability distribution of their color:
How many blue 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:
What is the probability of rolling a number that is bigger than 3 or smaller than 5? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 2? | |
[2] |
Roll 12 6-sided dice.
How many times would you expect to get anything except 5? | |
[1] | A bag has 3 red balls and 3 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score exactly 0? | |
[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:
| | 0.2 | 0.05 | 0.25 | | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3? | |
[1] |
Roll 72 6-sided dice.
How many times would you expect to get a number less than 5? | |
[1] | Flip a coin 16 times.
Each time a head comes up you win $3 and with each tail you lose $1. How much money would you expect to make altogether? | |
[1] |
Roll 54 6-sided dice.
How many times would you expect to get an even number? | |
[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:
| | 0.4 | 0.2 | | 0.25 | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 17s?
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[2] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 1 or a 1 and a tail? | |
[1] |
An obstacle course has 1 Fences and 2 Ditches. You have a 90% chance of clearing a Fence and a 50% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |