An obstacle course has 2 Fences and 1 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] | | You shoot an arrow at a target. There is a 60% chance of scoring a 20, a 20% 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] |
There are 45 balls in a bag. This is is the probability distribution of their color:
How many green 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:
What is the probability of rolling a number from 3 to 4? | |
[1] |
A bag has 2 balls with number 8 and 8 balls with a number 2. You take out 1 ball.
What is the probability of getting the ball with the number 2? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 17s?
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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:
| | 0.45 | 0.25 | | 0.15 | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 4 or 5? | |
[1] | Roll 72 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
Roll 30 6-sided dice.
How many times would you expect to get anything except 3? | |
[1] | A bag has 4 red balls and 10 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
Flip 7 coins.
What is the probability of getting 7 heads? | |
[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 exactly 0? | |
[2] |
A wheel has 7 red sections and 8 blue sections.
What is the probability of getting red? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 5? | |
[1] |
There are 36 balls in a bag. This is is the probability distribution of their color:
| | 0.25 | 0.75 | | orange | purple | | Color |
How many purple balls were in the bag? | |
[1] | We asked a group of people how many Pillows they eat in a day. Here are the results:
What fraction of the people eat more than 1 Pillows in a day? | |
[2] |
| A bag has 7 balls with number 6 and 9 balls with a number 1. What will be the average of the numbers of the balls taken out of the bag | |
[1] |