Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[1] | A bag has 4 red balls and 2 blue balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What is the probability of the girls to score less than 0? | |
[2] | 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 15s?
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[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:
What is the probability of rolling a number that is smaller than or equal to 4? | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 20, a 30% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of getting a ball with an odd number? | |
[1] | | You shoot an arrow at a target. There is a 20% chance of scoring a 20 and a 20% chance of scoring a 30 and a 60% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
A group of people were timed running 100m. Here are the results:
What fraction of the people run 100m in exactly 15s?
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[2] | | You shoot an arrow at a target. There is a 30% chance of scoring a 10 and a 40% chance of scoring a 40 and a 30% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | pink | purple | | Color |
Probability of Type
| | 0.5 | 0.5 | | wagon | sedan | | Type |
What is the probability of a car being a pink sedan? | |
[2] | A bag has 3 red balls, 10 blue balls and 8 yellow balls. You take out a yellow ball, then a blue ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than 5? | |
[1] | There are 120 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[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:
| | 0.6 | 0.05 | 0.15 | 0.1 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 3? | |
[1] | Roll 150 6-sided dice.
How many times would you expect to get more than 4? | |
[1] |
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