.tregor it shoud be (3^1)+(4*2) = (6+5) or (3*1)+(4*2) = (6+5) other solution (4/2) + (6*1) = (5+3) (5+2)+(-6/3) = (4+1) (5+2)+(6-3) = (4*1) (5+3)+(-6+2) =(4*1) (6+5)+(-3*2) = (4+1) (3*2)+(4+1) = (6+5) (3*2)+(-4-1)=(6-5) and it goes on