Question

There are
15 technicians and 11 chemists working in
a research laboratory. In how many ways
could they form a 5-member safety
committee if the committee must have exactly one technician?

Answer 1

25C5

Answer 2

11+15 = 26
(-1) technician = 26-1 = 25
(25)! / [(25-4)! (4)!

Answer 3

12650

Answer 4

that is not right.

Answer 5

I realized i have not learned this part of the lesson yet, and my teacher is going to be going over it tomorrow

Answer 6

btw the answer is 15C1*11C4=4950

Answer 7

Oh my bad . I was thinking permutation and applied combination.
Thanks for pointing out.

Answer 8

No problem, we all make mistakes ;)