Question 761460
Since we need one officer in the selection, we have 11 persons remaining from which we select five more persons. We have four officers to choose from giving us
(1) N = 4*(11P5) or
(2) N = 4*(11*10*9*8*7) or
(3) N = 4*(55440) or
(4) N = 221760
Answer: There are 221760 selections that contain at least on officer.