I mean because their comment are sequent . So Rocdocmac know he dont have Red ( Plasmid say one of three ) , and he cannot have B too because if he have blue , Plasmid will know he have Red :v
=>he already know he have Yellow
something wrong
BMAD: My hat is one of two colors
=> P and R 's hat is : RY, RB, YY, BR, YR
=> if R has B => P know he has R
=> R never say: My hat is one of three colors