A bag has 2 red balls, 3 blue balls and 4 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | There are 32 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in less than 14s?
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[2] | A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score less than 2? | |
[2] |
An obstacle course has 1 Fences and 2 Ditches. You have a 50% chance of clearing a Fence and a 50% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.3 | 0.5 | | green | purple | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being purple? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.9 | 0.1 | | | pink | green | orange | | Color |
If you choose a random ball from the bag, what is the probability of it being orange or green? | |
[1] | We asked a group of people how many Sandwiches they eat in a week. Here are the results:
What is the probability of the people to eat exactly 1 Sandwiches in a week? | |
[2] |
Flip 1 coin.
What is the probability of getting a head? | |
[1] | The weather forecast says that the chances of rain are 40%. Your chance of being outside today is 80%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] |
A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score exactly 3? | |
[2] | You flip a coin and roll a 5 sided die.
What is the probability of getting a 4 and a tail? | |
[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 | 0.1 | 0.25 | 0.2 | 0.4 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 1 to 4? | |
[1] | A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score more than 5? | |
[2] |
Roll 72 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] |