Answer:
10
Step-by-step explanation:
This is a combination problem since the order does not matter.
nCr = n! / r! * (n - r)!
where n is the number of things (5 projects)
and r is the number of things chosen
! means factorial which is multiply that number and all the numbers below it
5C3 = 5! 5! 5*4*3*2*1
------ = ------------ = ------------
3! ((5-3)! 3! 2! 3*2*1 (2*1)
Canceling like terms leaves
5C3 = 5*4/2 = 20/2 = 10
