Answer:
3 person work groups are possible 220
Step-by-step explanation:
Given data
applicants = 12
person = 3
to find out
How many 3 person work groups are possible
solution
3 person work group possibility is 12C3
that is classified as  = 12! / 3! 9!
3 person work group possibility =  12 ×11×10  /  3 ×2×1
3 person work group possibility = Â 220
so  3 person work groups are possible 220