Maths Q,not difficult!
Can somebody help me to translate this maths Q into chinese,
The digits used to number all the pages of a book were counted. If the number of digits used was 216, find the number of pages in the book.
I just want the TRANSLATION, no need to count for me, thx a lot!
回答 (2)
✔ 最佳答案
一本書所有頁數的數位數目總和係216
e.g.第59頁的有兩個數位,數位數目係2
第1-9頁的數位數目係1
第10-99頁的數位數目係2
第100-999頁的數位數目係3
設該書有x頁
如果該書有99頁,
數位數目總和=9(1)+(90)(2)=189
所以x>99
189+(x-99)(3)=216
(x-99)*3=27
x=108
所以該書有108頁
我唔知譯得好唔好@@
應該係:呢d數字用於計算一本書總共有幾多頁
如果d數字是216,咁本書總共有幾頁?
2007-04-22 19:59:40 補充:
下面果個譯得好好多@@
收錄日期: 2021-04-12 21:53:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070421000051KK02299
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