You roll a 7 sided die and a 3 sided die.
What is the probability of getting 3 on both dice? | |
[1] | A bag has 7 balls with numbers from 2 to 8. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number equal to 2 and a tail? | |
[1] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in exactly 17s?
| |
[2] |
A bag has 2 balls with numbers from 5 to 6. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 5? | |
[1] | Roll 1 6-sided die.
What is the probability of getting a 6? | |
[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:
| | 0.2 | 0.25 | 0.2 | | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger 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 4? | |
[1] |
You flip a coin and roll a 3 sided die.
What is the probability of getting a 4 and a tail? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 16s?
| |
[2] |
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:
| | 0.05 | 0.2 | | 0.05 | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 3 to 4? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.8 | 0.1 | 0.1 | | blue | yellow | orange | | Color |
How many orange balls were in the bag? | |
[1] | There are 110 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] |
Roll a die 54 times.
How many times would you expect to get a 5? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What is the probability of the kids to score more than 3? | |
[2] |
A bag has 10 red balls and 9 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |