The format of car number plates of a city is two capital letters (from A to Z) in the front followed by four digits (from 0 to 9). If there are no other restrictions for the format, how many different car number plates can be formed?
*Please explain in detail.
F.5 maths -&*@#$%
2010-12-16 8:39 am
回答 (1)
2010-12-16 9:21 am
✔ 最佳答案
The two capital letters can form 26x26=676 combinationsThe four digit numbers can form 10x10x10x10=10,000 combinations
Therefore the amount of different car number plates can be formed
=676x10,000
=6,760,000
收錄日期: 2021-04-13 17:42:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101216000051KK00035