| You shoot an arrow at a target. You will either score 10 (30% chance), 40 (30% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | A bag has 10 balls with numbers from 2 to 11. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[1] |
A bag has 8 balls with number 2 and 7 balls with a number 4. You take out 1 ball.
What is the probability of getting the ball with the number 4? | |
[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 1? | |
[1] |
A bag has 10 balls with numbers from 1 to 10. You take out 1 ball.
What is the probability of NOT getting the ball with the number 1? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 3? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 3? | |
[1] | A bag has 2 red balls, 5 green balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a green ball or a red ball? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting a 2 on both dice? | |
[1] | Flip a coin 12 times.
Each time a Tail comes up you win $2. It costs $13 to play (paid once). How much money would you expect to make altogether? | |
[1] |
A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 12? | |
[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 2? | |
[1] |
A wheel has 6 sections, 2 of each color.
What is the probability of getting red? | |
[1] | Roll 1 6-sided die.
What is the probability of getting an odd number? | |
[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 bigger than 2 and smaller than 4? | |
[1] | | You shoot an arrow at a target. You will either score 10 (40% chance), 30 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
| A bag has 9 balls with number 7 and 4 balls with a number 3. What will be the average of the numbers of the balls taken out of the bag | |
[1] | An obstacle course has 1 Fences and 2 Ditches. You have a 50% chance of clearing a Fence and a 90% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
The weather forecast says that the chances of rain are 50%. Your chance of being outside today is 60%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[1] | There are 35 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |
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