英语翻译How many 3-digit numbers have only one digit 5 in them?

英语翻译How many 3-digit positive integers are odd and do not contain the digit 5? 英语翻译How many 3-digit numbers have only one digit 5 in them? 求英语翻译For how many positive two-digit interger is the ones digit greater than twice the tens digit? How many 3-digit numbers have only one digit 5 in them? How many 3-digit numbers are divisible by 英语翻译how many five - digit positive integers,divisible by 9,can be written using only the digis 3 and 英语翻译how many integers between 9 and 100 have the tens digit equal to 4 or 5 and the units digit(ones digit ) equal to 7,8 or How many 3-digit positive intergers are odd and do not contain the digit 怎么算?请指教 How many 3-digit numbers between 100 and 1000 have a 4 as the middle digit?的翻译 How many 3 digits numbers have exactly one digit 5 in them?ji How many 3-digit numbers have exactly one digit 5 in them4月22日11点之前解答,谢谢了!(解释并写出答案） How many four-digit positive integers are there with thousands digit 英语翻译1 in how many of integers between 1 and 100 does the digit 5 occur exactly once?A 10 B 18 C 19 D 20 E 21 为什么选B?2 What is the total number of different 5-digit numbers that contain all of the digis 2,3,4,7 and 9 and in which none o if n is a positive integer,how many of the ten digits from 0 through 9 could be the units digit of n^3? How many 4-digit numbers are common multiples of 7 and 11?选择（1）10（2）116（3）117（4）232求方法 英语翻译In how many of the integers between 1 and 100 does the digit 5 occur exactly once (A) 10 (B) 18 (C)19 (D) 20 (E) 21求翻译以及解题思路 关于阶乘的How many seven-digit telephone numbers are there for any one area code if the numbers 0 or 1 can not be used as the first digit of a seven digit phone number? SAT一道数学how many positive four-digit integers have 1 as their first digit and 2 or 5 as their last digit?答案说是200,我为什么觉得是144?