A bag has 7 red balls, 7 blue balls and 8 yellow balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score more than 1? | |
[2] |
Roll 144 6-sided dice.
How many times would you expect to get more than or equal to 6? | |
[1] | An obstacle course has 1 Fences and 1 Ditches. You have a 50% chance of clearing a Fence and a 90% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
A bag has 8 balls with number 9 and 9 balls with a number 7. You take out 1 ball.
What is the probability of getting the ball with the number 9? | |
[1] | A bag has 4 red balls, 6 blue balls and 10 yellow balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
Roll 36 6-sided dice.
How many times would you expect to get an odd number? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | purple | orange | | Color |
Probability of Type
| | 0.3 | 0.7 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] |
A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 13s?
| |
[2] | A group of humans were timed running 100m. Here are the results:
| Time | humans | | 13 | 2 | | 14 | 1 | | 15 | 6 | | 16 | 2 | | 17 | 6 |
What is the probability of the humans to run 100m in more than 14s?
| |
[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:
| | 0.7 | | 0.15 | 0.05 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | purple | pink | | Color |
Probability of Type
| | 0.6 | 0.4 | | wagon | sedan | | Type |
What is the probability of a car being a pink wagon? | |
[2] |
We asked a group of girls how many Sandwiches they eat in a week. Here are the results:
What is the probability of the girls to eat exactly 4 Sandwiches in a week? | |
[2] | Roll 18 6-sided dice.
How many times would you expect to get an even number? | |
[1] |
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