儿子有一道题不会，我也没搞懂。求教！
How many numbers are there that have the sum of their digits in base 10
equal to 100 and the product of their digits equal to 5?
多谢
f*c 发帖数: 687
2
这个数是９６位的，其中９５个数字是１，还有一个是５。
【在 r*****e 的大作中提到】 : 儿子有一道题不会，我也没搞懂。求教！ : How many numbers are there that have the sum of their digits in base 10 : equal to 100 and the product of their digits equal to 5? : 多谢
