Question

There are 10 students in a class. The teacher chooses 3 students to go to the

library. The order in which they are chosen does not matter. How many ways
are there to choose the students?
A. 100
B. 90
C. 720
D. 120

Answer 1

Answer: 120

Explanation:

i just took the quiz

Answer 2

D

Explanation:

Since the order does not matter, then it is a combination question,

So you just use the combination technique,

10C3 = 10!/(10!(10-3)!) = 120 ways