Probability Review

Find the number of possibilities:
A team of 17 softball players needs to choose three players to refill the water cooler.

• 272
• 4080
• 680

How many 2-digit numbers can you make using the digits 1, 2, 3, & 4 without repeating the digits? Think: Does order matter?

• 90
• 100
• 12
• 24

Ambry must submit 4 paintings as part of her application to art school. If she has 25 to choose from, how many ways can she pick 4? Think: Does order matter?

• 12,650
• 303,600
• 100
• 254

James purchased 3 shirts, 3 jackets and 2 pairs of pants.  How many different outfits using a shirt, a jacket, and pants are possible?

• 8
• 18
• 54

What does ₁₀C₅ mean?

• Combinations with 5 choices and 10 positions
• Combinations with 10 choices and 5 positions
• Permutations with 5 numbers and 10 operations
• Permutations with 5 hot dogs and 10 drinks

Which of the following would be used to calculate the number of ways one could choose 3 toppings for a sundae out of a list of 15?

• Permutation
• Combination
• Neither

Permutation, combination, or neither?
A team of 8 basketball players need to choose a co-captain and captain.

• combination
• permutation
• neither

Permutation, combination, or neither?
There are 45 applicants for three Computer Programmer job positions.

• combination
• permutation
• neither

10. A bag contains 5 red marbles and 4 pink marbles. Joe randomly draws a marble and then puts it back. Then he draws again. What is the probability of picking 2 pinks?

• 27.8%

• 24.7%

• 16.7%

• 19.8%

11. A coin is flipped and a die is rolled. What is the probability that the coin lands heads up and the number rolled is 1?

• 6.3%
• 25.0%
• 8.3%
• 2.8%