| You shoot an arrow at a target. There is a 50% chance of scoring a 10, a 30% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are less than 5? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are more than 3? | |
[1] | There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | green | blue | purple | | Color |
How many green balls were in the bag? | |
[1] |
The weather forecast says that the chances of rain are 20%. Your chance of being outside today is 90%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] | A bag has 2 red balls and 6 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
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] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score exactly 1? | |
[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:
| | 0.25 | 0.25 | 0.15 | 0.15 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] | A bag has 4 balls with number 5 and 9 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 1? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.8 | | purple | pink | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink or orange? | |
[1] | A bag has 2 balls with number 5 and 9 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 5? | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What is the probability of the kids to score less than 0? | |
[2] | We asked a group of kids how many Burgers they eat in a week. Here are the results:
What is the probability of the kids to eat less than 3 Burgers in a week? | |
[2] |
Roll 72 6-sided dice.
How many times would you expect to get a number less than 4? | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 10, a 40% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
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