m is two digit number and 2m is a three digit number,what is

来源：学生作业帮编辑：搜狗做题网作业帮分类：英语作业时间：2024/07/23 04:47:46

m is two digit number and 2m is a three digit number,what is the unit digit of m
RT是GMAT的数学题1.the unit number of 2m is 4
2.the unit number of m is the same as the tens number of 2m

虽然是很久之前的了,可能楼主已经不需要了,但正好看到,并且发现下面给的答案也没帮助,希望自己的回答对其他有疑问的人有点帮助,如果错误,请大家指正.
题目意思是：
m 是一个两位数,2m是一个三位数,m 的个位数是什么?
（1）2m的个位数是4
（2）m 的个位数和2m的十位数相同.
由（1）：2m的个位数是4,那么m的个位数可能是2 or 7,并不能确定
由（2）：很明显由（2）单独得不出结论,并且即使在（1）的条件下,m也可以为62（2m=124）or 87(2m=174) 这个数并不是确定的
因此选E

m is two digit number and 2m is a three digit number,what is What is the largest three-digit number which Is a multiple o 英语翻译A three digit number is between 130 and 200.It is divisi Suppose is a 6-digit number, are three different 1-digit num 英语翻译in a two-digit number,the units digit is greater than th It is a two-digit number.翻译,第一个比采纳. 英语翻译The sum of the digits of a two-digit number is subtracte 英语翻译A number is chosen randomly from all of the 2-digit inte 各位大虾请教一道英语数学题SAT if n is a two-digit number whose units digi 英语翻译A three-digit number has hundreds digit h,tens digit zer 英语翻译30.What is the total number of different 5-digit numbers a double-digit number plus nine times of its ones is 100.wha