**Q1: **

Find the number of ways to select 3 different letters from the set .

**Q2: **

How many teams of four can be selected from a group of 20 people?

**Q3: **

A team of four is to be randomly selected from a group of ten boys and ten girls. Determine the probability that a team will contain only girls.

- A
- B
- C
- D
- E

**Q4: **

Seven boys and eight girls entered a draw for four free movie tickets. What is the probability that all four tickets were won by boys?

- A0
- B
- C
- D
- E

**Q5: **

Which of the following represents the number of ways of selecting 2 students out of 24 for a class activity?

- A
- B
- C
- D

**Q6: **

Which of the following represents the number of ways of selecting 2 students out of 17 for a class activity?

- A
- B
- C
- D

**Q7: **

A computer generates four-digit codes using the numbers 0–9 with no repeated digits. How many unique codes can be generated?

**Q8: **

A small combination padlock can be opened by entering three different specified numbers from 1 to 9 in any order. James has 10 attempts to guess the combination. Determine the probability of him opening the lock.

- A
- B
- C
- D
- E

**Q9: **

A bowl contains 25 marbles, each with a different color. If Joseph selects four marbles from the bowl, what is the probability that he selects the marbles with the four colors that he wants?

- A0
- B
- C
- D
- E

**Q10: **

Thirteen boys and fifteen girls entered a draw for five free movie tickets. What is the probability that all five tickets were won by boys?

- A0
- B
- C
- D
- E

**Q11: **

Andrea invited 4 of her 24 friends over for a movie night. If she chose to invite her friends at random, what is the probability that Cynthia, Judith, Molly, and Sandra are chosen?

- A0
- B
- C
- D
- E

**Q12: **

In how many different ways can 10 motorcycles and 9 bicycles be arranged in 2 spaces if the order is not important?

**Q13: **

In a science fair experiment, three units are selected for testing out of every 587 units produced. In how many ways can these three units be selected?

**Q14: **

In a science fair experiment, three units are selected for testing out of every 517 units produced. In how many ways can these three units be selected?