Calculating Combinations Using Factorials
Mrs. Thompson has 30 students, and 2 of these students will be selected to attend a regional spelling bee. Which of the following expressions represents the number of possible combinations of students she can select?
A
15!/1! *30!
B
15!/14! * 2!
C
30!/28! * 2!
D
30!/2!
Question Leaderboard
Not enough data yet to show leaderboard.