There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.1 | 0.3 | | orange | blue | green | | Color |
How many blue balls were in the bag? | |
[1] | A bag has 6 balls with numbers from 5 to 10. You take out 1 ball.
What is the probability of NOT getting the ball with the number 8? | |
[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 1? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are less 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 15s?
| |
[2] | | A bag has 5 balls with number 5 and 9 balls with a number 9. What will be the average of the numbers of the balls taken out of the bag | |
[1] |
A bag has 2 red balls, 10 blue balls and 4 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | Roll 150 6-sided dice.
How many times would you expect to get more than 6? | |
[1] |
Roll 144 6-sided dice.
How many times would you expect to get less than 5? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.2 | 0.5 | | blue | red | green | | 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:
| | 0.25 | 0.05 | 0.25 | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 or smaller than 5? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 10 and a 30% chance of scoring a 30 and a 30% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
Roll 36 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] | You flip a coin and roll a 8 sided die.
What is the probability of getting a 1 and a tail? | |
[1] |
A bag has 3 balls with number 7 and 9 balls with a number 6. You take out 1 ball.
What is the probability of getting the ball with the number 7? | |
[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:
| | 0.7 | 0.15 | 0.1 | 0.05 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 3 to 5? | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids 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:
| | 0.5 | 0.05 | 0.25 | 0.2 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 4? | |
[1] |
|