| You shoot an arrow at a target. There is a 10% chance of scoring a 10 and a 40% chance of scoring a 30 and a 50% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[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:
| | 0.45 | 0.05 | 0.2 | 0.2 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 2? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 16s?
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[2] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | orange | purple | | Color |
Probability of Type
| | 0.3 | 0.7 | | wagon | sedan | | Type |
What is the probability of a car being a orange wagon? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.7 | 0.3 | | red | yellow | | Color |
Probability of Type
| | 0.2 | 0.8 | | sedan | wagon | | Type |
What is the probability of a car being a yellow wagon? | |
[2] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 6 and a head? | |
[1] |
A bag has 4 balls with numbers from 4 to 7. You take out 1 ball.
What is the probability of NOT getting the ball with the number 5? | |
[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:
| | 0.2 | 0.25 | | 0.05 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 and smaller than 5? | |
[1] |
A bag has 9 red balls and 8 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.2 | 0.8 | | orange | pink | | Color |
Probability of Type
| | 0.2 | 0.8 | | wagon | sedan | | Type |
What is the probability of a car being a pink wagon? | |
[2] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 2? | |
[1] | Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are less than 3? | |
[1] |
A group of humans did a math test and here are their scores out of 5:
What fraction of the humans score more than 4? | |
[2] | A bag has 9 red balls and 10 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] |
You flip a coin and roll a 7 sided die.
What is the probability of getting a 6 and a tail? | |
[1] |