數學問題!! 有多少個7位整數,使得它的數字和是18?

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2010-08-16 22:10:56 補充：
If cannot see the full answer, please refer to the below links:
http://img340.imageshack.us/img340/2436/87051819.png
http://img576.imageshack.us/img576/2476/99988426.png
http://img51.imageshack.us/img51/5386/24482836.png

2010-08-16 22:11:01 補充：
http://img834.imageshack.us/img834/3483/57452632.png
http://img196.imageshack.us/img196/9485/72684907.png
http://img710.imageshack.us/img710/9241/37462244.png

咁唔該你幫我搵下點計
因為我諗左好耐都諗唔可以點計
真係唔該哂你呀!!

個ANSWER係87,648個

不過係用program計,
搵到詳細計法先答你好了-_-"

話時話1,000,000~9,999,999咁多個組合,
話得126個, E個ANSWER都未免太唔似樣吧= =!!

兩個
九百九十九萬九千九百九十九減
九百九十九萬九千九百八十一

英文:
2
9,999,999 Less
9999981

2010-08-09 13:06:47 補充：
哦........
1,313,427
1加3加1加3加4加2加7等如18
Oh ........
1,313,427
1 plus 3 plus 1 plus 2 plus 3 plus 4 plus 7 equal to 18

2010-08-09 13:08:03 補充：
sorry
以上是錯
7X18
126個7位整數,使得它的數字和是18

2010-08-13 19:08:06 補充：
7X18
126 7-bit integer, making its numbers and was 18