芝麻爺爺的部落格

另有數字遊戲更妙：

..........0x9+8=8

...........9x9+7=88

..........98x9+6=888

.........987x9+5=8888

........9876x9+4=88888

.......98765x9+3=888888

......987654x9+2=8888888

.....9876543x9+1=88888888

....98765432x9+0=888888888

...987654321x9-1=8888888888

..9876543210x9-2=88888888888





...........1x9+2=11

..........12x9+3=111

.........123x9+4=1111

........1234x9+5=11111

.......12345x9+6=111111

......123456x9+7=1111111

.....1234567x9+8=11111111

....12345678x9+9=111111111