A bag has 10 red balls and 3 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting red for the second ball? | |
[1] | A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in less than 14s?
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[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | pink | red | | Color |
Probability of Type
| | 0.1 | 0.9 | | wagon | sedan | | Type |
What is the probability of a car being a red wagon? | |
[2] | | You shoot an arrow at a target. There is a 90% chance of scoring a 20 and a 10% chance of scoring a 40. 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 40%. The chance of remembering your umbrella is 60%. Your chance of being outside today are 60%.
What is the probability of getting wet today? | |
[1] | | You shoot an arrow at a target. You will either score 20 (50% chance), 40 (40% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
| A bag has 7 balls with number 1 and 4 balls with a number 4. What will be the average of the numbers of the balls taken out of the bag | |
[1] | We asked a group of boys how many Popsicles they eat in a month. Here are the results:
What is the probability of the boys to eat less than 1 Popsicles in a month? | |
[2] |
We asked a group of boys how many Oranges they eat in a week. Here are the results:
What is the probability of the boys to eat less than 4 Oranges in a week? | |
[2] | Roll 96 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than 2? | |
[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 3 or 5? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 5? | |
[2] | A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score more than 3? | |
[2] |
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