A*B*C + D*E*F = G*H*I
这里面不计顺序算了有11种,计顺序就多了.
例如有:
1*6*8 + 3*4*5 = 2*6*9
1*5*6 + 3*4*8 = 2*7*9
1*3*8 + 4*5*6 = 2*8*9
1*4*6 + 3*5*8 = 2*8*9
1*4*9 + 2*5*6 = 3*4*8
1*4*7 + 2*5*8 = 3*4*9
1*4*9 + 2*6*7 = 3*5*8
1*2*6 + 3*7*8 = 4*5*9
1*2*3 + 5*6*7 = 4*6*9
1*2*9 + 4*6*8 = 5*6*7
2*3*4 + 6*7*8 = 5*8*9