In how many ways can 5 people be seated in a row of 5 chairs?
Question 2
Skill question
Calculate the number of ways to choose 3 books to read from 6 distinct books.
Question 3
Skill question
How many 4-digit codes can be formed using the digits 0–9 if no digit is repeated?
Question 4
Skill question
From 8 students, a president and a vice-president are to be selected. How many possible selections are there?
Question 5
Skill question
In a race with 20 runners, how many possible outcomes are there for first, second, and third places?
Question 6
Skill question
A committee of 5 is to be formed from 4 women and 6 men. How many ways are there to choose exactly 2 women and 3 men?
Question 7
Skill question
A lock uses a sequence of 3 letters (A–Z) followed by 2 digits (0–9). Letters may not repeat, but digits may repeat. How many distinct codes are possible?
Question 8
Skill question
A bag contains 8 red and 7 blue balls. If 5 balls are drawn at random, how many ways are there to draw exactly 3 red and 2 blue balls?
Question 9
Skill question
From 12 participants, a subcommittee of 4 is selected and then a chair and a secretary are chosen from that subcommittee. How many ways can this be done?
Question 10
Skill question
From 15 people, a team of 5 is selected and then the 5 team members are arranged in a line for a photograph. How many possible selections and arrangements are there?
Question 11
Skill question
A drawer has 5 green, 4 yellow, and 3 red marbles. If 4 marbles are drawn at random, how many ways result in at least one marble of each color?
Question 12
Skill question
From 100 students, 10 are chosen as finalists and then 3 of these finalists receive gold, silver, and bronze medals (distinct awards). How many distinct outcomes are possible?