Simple Probability
A carnival game features a spinner that is divided into 12 equally sized portions. If the needle is spun once, find the probability of spinning the number one.
1/12
How many outcomes are possible if a coin is flipped and a spinner that is cut into 10 equally sized portions is spun?
20
A closet has 16 shirts in it. There are 4 striped shirts, 7 polka dot shirts and the rest are solid. What is the probability of randomly picking a solid or striped shirt?
9/16
If you roll a standard six-sided die 30 times, how many times would you expect to see a number greater than two appear?
20
A standard dice is rolled. What is the probability of landing on the complement of an even number?
1/2
There are two spinners. One with 4 sections and the letters A, B, C, D. And one with 2 sections with the colors red and blue in each sections. How many possible outcomes are there?
8
A six-sided die is rolled and then a coin is flipped. Create an organized list of all possible combinations that could happen when a die is rolled and a coin is flipped.
1, heads
1, tails
2, heads
2, tails
3, heads
3, tails
4, heads
4, tails
5, heads
5, tails
6, heads
6, tails
A softball player gets a hit 40% of the time. If she is at bat 300 times in a season, how many hits would you expect her to have?
120
A spinner has 7 sections, numbered 1-7. What is the probability of landing on a number that is a factor of 8?
3/7
If three coins are flipped, what is the probability of two heads and a tail coming up in any order? *Hint- make a tree diagram to help you visualize.
3/8
A whole number is picked from the list: {1, 2, 3, 4, 5, 6, 7, 8, 9}. Which set below contains equally likely events.
(1) {picking an even, picking an odd}
(2) {picking a number greater than five, picking a number less than five}
(3) {picking a multiple of 2, picking a multiple of 4}
(4) {picking a prime number, picking a non-prime number}
2
At a school assembly, four out of the first 10 students were wearing spirit wear. Based on this information, if 500 students were at the assembly, then how many students could be expected to have on spirit wear?
200
A 2 sided coin is flipped. What is the probability of getting purple?
0%
There are two spinners. One with 4 sections and the letters A, B, C, D. And one with 2 sections with the colors red and blue in each sections. What is the probability of spinning a B and a blue.
1/8
The following numbers represent probabilities. Which one indicates the event that is the most likely to happen?
(1) 0.91 (3) 8/9
(2) 64% (4) 3 out of 4
1
The probability of a spinner landing on yellow is 1/4. What does 3/4 represent?
A. P(yellow)
B. P(blue)
C. P(yellow’)
D. P(purple and blue)
C