Question 212005
Let M=male,,,F=Female,,,,frames
Let  R=red,,W=white,,B=blue,,,colors
Let S=soft,,,M=medium,,,H=hard,,,construction
.
a) 2(frames) *3(colors) *3(constructions) = 18 combinations.
.
b),,,as  it  is  hard  to  space  without some  holding device,  pls  ignore (.) 's
.
............................S.....................................................
..................R........M......................................................
............................H.....................................................
............................S......................................................
.........M......W........M......................................................
............................H......................................................
............................S.....................................................
..................B........M.....................................................
............................H.....................................................
............................S.....................................................
..................R........M.....................................................
............................H.....................................................
............................S.....................................................
.........F......W........M.....................................................
............................H.....................................................
............................S......................................................
..................B........M.....................................................
............................H.......................................................
PLEASE  DRAW  THE  CONNECTING  LINES
C)I'll  list  them,  but  tree  shows  them  clearer
.
MRS,MRM,MRS,,,MWS,MWM,MWH,,,,MBS,MBM,MBH
.
FRS,FRM,FRH,,,FWS,FWM,FWH,,,,FBS,FBM,FBH
.