Roll 102 6-sided dice.
How many times would you expect to get an odd number? | |
[1] | A bag has 7 red balls and 3 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] |
A bag has 7 balls with numbers from 2 to 8. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[1] | | You shoot an arrow at a target. There is a 50% chance of scoring a 20, a 20% 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] |
The weather forecast says that the chances of rain are 90%. The chance of remembering your umbrella is 40%. Your chance of being outside today are 40%.
What is the probability of getting wet today? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | yellow | blue | | Color |
Probability of Type
| | 0.7 | 0.3 | | sedan | wagon | | Type |
What is the probability of a car being a blue wagon? | |
[2] |
We asked a group of boys how many Chocolates they eat in a week. Here are the results:
What fraction of the boys eat exactly 0 Chocolates in a week? | |
[2] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 16s?
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[2] |
Flip a coin 4 times.
Each time a Head comes up you win $2. How much money would you expect to make altogether? | |
[1] | | You shoot an arrow at a target. There is a 20% chance of scoring a 10 and a 40% chance of scoring a 40 and a 40% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |
| You shoot an arrow at a target. There is a 10% chance of scoring a 20 and a 30% chance of scoring a 40 and a 60% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | A wheel has 7 sections, each has a reward in dollars, from $1 through to $7.
What prize do we expect to get if we spin the wheel? | |
[1] |
A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score exactly 5? | |
[2] | Flip 1 coin.
What is the probability of getting a head? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 10 and a 40% chance of scoring a 30 and a 20% 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:
| | 0.6 | 0.2 | 0.15 | 0.05 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and smaller than 3? | |
[1] |
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