How many four-digit positive integers are there with thousands digit 答案 问题是【4位数的正整数中有多少个的千位数是2的?】答:2000到2999之间的数字都符合条件,所以共有2999-2000+1=1000个,即【one thousand integers.】相关推荐 1How many four-digit positive integers are there with thousands digit 反...
答案 【解析】30.相关推荐 1【题目】有多少个四位正整数的四个数字依次组成一个等差数列(例如:1357、5678)?How many four-digit positive integers are there such that the four digits form an arithmeticsequence in that order (e.g. 1357, 5678)?反馈 收藏 ...
How many four-digit positive integers are there such that each of its digits is a square number? (Note: 0 is a square number.)相关知识点: 试题来源: 解析 192. 个位数的平方数有0,1,4,9这4个, 这个四位正整数的千位数只能为1,4,9, 当这个四位正整数的千位数为1时,百位数可能为0,1,4,...
How many 4-digit positive integers are there in which all 4 digits are even?_PS出国考试答疑器_GMAT_提问
How many four-digit positive integers have at least one digit that is a 2 or a 3?( )A.2439B.4096C.4903D.4904E.5416 答案 ESince we are asked for the number of positive 4-digit integers with at least 2 or 3 in it, we can find this by finding the total number of 4-digit inte...
我们可以把这个分成两个例子.如果整数是5的倍数,最后一个数字必须是0或5例1:最后一个数字是5,领先的数字可以是1,2,3或4,因为第二个数字可以是0,但不是领先的数字,还有4个选择.第三位数字不能是前导数字或第二位数字,所以有3个选择.整数的数目是这种情况是4⋅4⋅3⋅1=48.例2:最后一个数字是0,...
How many 4-digit positive integers (that is, integers between 1000 and 9999, inclusive) having only even digits are divisible by 5?在4位正整数(即1000和9999之间的整数 ·包括1000和9999)有多少个数满足每一位数都是偶数,并且可以被5整除?
2【题目】How many two-digit positive integers are there suchthat the sum of the two- digit positive integer and the number formed by reversing the digits of the two-digit positive integer is a square number?有多少个两位正整数,使得两位正整数与两位正整数的数字对位所形成的数之和是平方数?A.5B...
How many four-digit positive integers are divisible by 7 but not 13?相关知识点: 试题来源: 解析 1187. 最小的四位正整数是1000,最大的四位正整数是9999, 则四位正整数一共有9000个, 能被7整除的最小四位正整数是1001=7×143, 能被7整除的最大四位正整数是9996=7×1428, 则能被7整除的四位正...
【GMAT 排列与组合模考】GMAT考满分为GMAT考生提供GMAT 排列与组合模考练习。How many 4-digit positive integers are there in which all 4 digits are even?