Question

How many combinations of 5 students can a teacher choose from 24 students?








A.
120







B.
42,504







C.
5,100,480







D.
7,962,624

Answer 1

I thought the formula for the number of combinations of n objects taken r at a time was \[\frac{ n! }{ (n-r)!r! }\]

I'm I missing something?

Answer 2

yes same for this one i made a mistake use this formula ^

Answer 3

@xGuardians

Answer 4

24! / 19! * 5!
24C5 if you have a calculator.

42504 is Answer
B.