A bag has 2 red balls and 5 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.3 | 0.3 | | pink | orange | red | | Color |
If you choose a random ball from the bag, what is the probability of it being orange? | |
[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 | 0.25 | | 0.1 | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 4? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | orange | yellow | | Color |
Probability of Type
| | 1 | | wagon | sedan | | Type |
What is the probability of a car being a yellow sedan? | |
[2] |
There are 30 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] | Roll 126 6-sided dice.
How many times would you expect to get anything except 3? | |
[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 | | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 4? | |
[1] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in more than 13s?
| |
[2] |
A bag has 2 balls with number 6 and 2 balls with a number 7. You take out 1 ball.
What is the probability of getting the ball with the number 7? | |
[1] | | You shoot an arrow at a target. You will either score 10 (30% chance), 30 (20% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 10 red balls, 7 blue balls and 3 yellow 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] | 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 smaller than or equal to 1? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score more than 2? | |
[2] | We asked a group of kids how many Pizzas they eat in a week. Here are the results:
What fraction of the kids eat exactly 1 Pizzas in a week? | |
[2] |
Roll 48 6-sided dice.
How many times would you expect to get more than or equal to 2? | |
[1] | Roll 66 6-sided dice.
How many times would you expect to get more than or equal to 3? | |
[1] |
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