6C2*6C2*6 - 5*5*6 = 1200
groups of 2 doctors, 2 nurses, and an anesthesiologist, minus the groups which have the restrained doctor and nurse (5*5*6)
can you explain 5*5*6
part please. I couldnt figure out and tries this POE.
i picked all possible combinations sans any condition:
6c2 * 6c2 * 6c1 = 1350. The answer will be less than this.
this eliminates all options except :
C and remotly D.
find all combination excluding problem nurse:
6c1 * 5c1 * 6c1 = 900