Notăm: Trandafiri-x; Zambile-2x; lalele-z;
punem condiția că z>x; x+2x<25
x+2x+z=25
fie x=2 => 2+4+z=25 => z=19, z>x
fie x=3 => 3+6+z=25 => z=16, z>x
fie x=4 => 4+8+z=25 => z=13, z>x
fie x=5 =>5+10+z=25 => z=10, z>x
fie x=6 => 6+12+z=25 => z=7, z>x
fie x=7 => 7+14+z=25 => z=4 ; z<x => ∅