| ((1·4)+8)·2 = 24 ((1·8)+4)·2 = 24 (1·8)-2)·4 = 24 ((1+4)-2)·8 = 24 ((1-2)+4)·8 = 24 ((4·1)+8)·2 = 24 ((4/1)+8)·2 = 24 ((4/2)+1)·8 = 24 ((4+1)-2)·8 = 24 ((4+8)·1)·2 = 24 ((4+8)·2)·1 = 24 ((4+8)·2)/1 = 24 ((4+8)/1)·2 = 24 ((4-2)+1)·8 = 24 ((8·1)+4)·2 = 24 ((8·1)-2)·4 = 24 |
((8/1)+4)·2 = 24 ((8/1)-2)·4 = 24 ((8+4)·1)·2 = 24 ((8+4)·2)·1 = 24 ((8+4)·2)/1 = 24 ((8+4)/1)·2 = 24 ((8-2)·1)·4 = 24 ((8-2)·4)·1 = 24 ((8-2)·4)/1 = 24 ((8-2)/1)·4 = 24 (4+(1·8))·2 = 24 (4+(8·1))·2 = 24 (8-(1·2))·4 = 24 (8-(2·1))·4 = 24 (8-(2/1))·4 = 24 (8+(1·4))·2 = 24 |
(8+(4·1))·2 = 24 1·(2·(4+8)) = 24 1·(2·(8+4)) = 24 1·(4·(8-2)) = 24 2·(1·(4+8)) = 24 2·(1·(8+4)) = 24 2/(1/(4+8)) = 24 2/(1/(8+4)) = 24 4·(1·(8-2)) = 24 4·(8-(1·2)) = 24 4·(8-(2·1)) = 24 4·(8-(2/1)) = 24 4/(1/(8-2)) = 24 8·(1-(2-4)) = 24 8·(4-(2-1)) = 24 |
- Op hoeveel manieren kan je zo met 1, 2, 4, en 8 het getal 23 maken?
