There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.4 | | | yellow | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being green or purple? | |
[1] | A bag has 3 balls with numbers from 1 to 3. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 0? | |
[1] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score exactly 3? | |
[2] | Flip 7 coins.
What is the probability of getting 7 tails? | |
[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:
| | 0.25 | 0.25 | 0.15 | 0.1 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 4 or 5? | |
[1] | A wheel has 10 sections, 2 of each color.
What is the probability of getting blue? | |
[1] |
Flip a coin 2 times.
Each time a Head comes up you win $1. It costs $2 to play (paid once). How much money would you expect to make altogether? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 10 and a 10% chance of scoring a 30 and a 50% 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. You will either score 20 (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 2 red balls and 6 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] |
A bag has 8 balls with number 9 and 5 balls with a number 6. You take out 1 ball.
What is the probability of getting the ball with the number 9? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 6? | |
[1] |
Flip a coin 8 times.
Each time a Tail comes up you win $3. How much money would you expect to make altogether? | |
[1] | We asked a group of boys how many Oranges they eat in a month. Here are the results:
What fraction of the boys eat exactly 2 Oranges in a month? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 1 | | | pink | orange | | Color |
Probability of Type
| | 0.6 | 0.4 | | sedan | wagon | | Type |
What is the probability of a car being a pink wagon? | |
[2] | We asked a group of boys how many Icecreams they eat in a month. Here are the results:
What fraction of the boys eat less than 3 Icecreams in a month? | |
[2] |
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