Q. There were 13 students running in a race. How many different arrangements of first, second, and third place are possible?Answer:
Choose First-Place Winner: Determine the number of ways to choose the first-place winner.Since there are 13 students running in the race, any one of the 13 can come in first place.Calculation: There are 13 choices for the first place.
Choose Second-Place Winner: Determine the number of ways to choose the second-place winner.After the first place has been chosen, there are 12 students left who can come in second place.Calculation: There are 12 choices for the second place.
Choose Third-Place Winner: Determine the number of ways to choose the third-place winner.After the first and second places have been chosen, there are 11 students left who can come in third place.Calculation: There are 11 choices for the third place.
Calculate Total Arrangements: Calculate the total number of different arrangements for the first three places.To find the total number of different arrangements, we multiply the number of choices for each position.Calculation: 13 choices for first place ×12 choices for second place ×11 choices for third place =1716 different arrangements.