A bag has 7 balls with number 9 and 6 balls with a number 6. You take out 1 ball.
What is the probability of getting the ball with the number 9? | |
[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 3? | |
[1] |
We asked a group of dogs how many Icecreams they eat in a week. Here are the results:
What fraction of the dogs eat more than 4 Icecreams in a week? | |
[2] | Roll 36 6-sided dice.
How many times would you expect to get anything except 5? | |
[1] |
An obstacle course has 2 Fences and 1 Ditches. You have a 80% chance of clearing a Fence and a 80% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in more than 13s?
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[2] |
You flip a coin and roll a 7 sided die.
What is the probability of getting a 4 and a tail? | |
[1] | A bag has 2 red balls and 10 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] |
We asked a group of girls how many Burgers they eat in a day. Here are the results:
What fraction of the girls eat exactly 0 Burgers in a day? | |
[2] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | green | red | | Color |
Probability of Type
| | 0.2 | 0.8 | | wagon | sedan | | Type |
What is the probability of a car being a red sedan? | |
[2] |
| You shoot an arrow at a target. There is a 70% chance of scoring a 10 and a 30% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | | You shoot an arrow at a target. There is a 70% 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] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | pink | purple | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink? | |
[1] | We asked a group of girls how many Popsicles they eat in a day. Here are the results:
What fraction of the girls eat less than 4 Popsicles in a day? | |
[2] |
Roll 84 6-sided dice.
How many times would you expect to get less than or equal to 4? | |
[1] |