Question

Mr. Davis has 15 students. He wants to send 3 of his students to pick up books. How many combinations of students can he choose.

Answer 1

15! i think

Answer 2

15*14*3*12*11*10*9*8*7*6*5*4*3*2*1

Answer 3

15C3 - that number of combinations of 3 out of 15
work it out as follows

15 * 14 * 13
----------
3 * 2 * 1

Answer 4

what you have there tyler is number of possible arrangements of 15

Answer 5

oh ok im working on the same thing so i have to practice a little more

Answer 6

ok

Answer 7

455?

Answer 8

5 * 7 * 13 = 13*35 = 455 - yup