How many 3-digit numbers are there so that the sum of its digits is 5?有多少个三位数的各个数字之和是5? 答案 15个.各个数字之和为5,百位是1的三位数有104、113、122、131、140;百位是3的三位数有203、212、221、230;百位是3的三位数有302、311、320;百位是4的三位数有401、410;百位是5的三位...
How many three-digit numbers are there that have the sum of their digits equal to 7?. 相关知识点: 试题来源: 解析 28.. First of all, we can list out the ways to rewrite 7 as the sum of three numbers: 7=0+0+7=0+1+6=0+2+5=0+3+4 =1+1+5=1+2+4=1+3+3=2+2+3 ...
一共可以组成9×9×8=648个没有重复数字的三位数.结果一 题目 没有重复数字的三位数有多少个?How many three-digit numbers are there with no repeating digits? 答案 648.相关推荐 1没有重复数字的三位数有多少个?How many three-digit numbers are there with no repeating digits?反馈 收藏 ...
How many three-digit numbers are there in which every digit is a multiple of 4?相关知识点: 数与代数 数的认识 整数的认识 万以内数的认识 试题来源: 解析 18. 个位数中是4的倍数的数字有:0,4,8,三位数中,每个数位上的数字是4的倍数的数有:444,888,448,484,844,488,848,884,400,408,480,804...
How many three-digit numbers are there that have the sum of their digits equal to 7? 答案 28.First of all, we can list out the ways to rewrite 7 as the sum of three numbers: 7=0+0+7=0+1+6=0+2+5=0+3+4 =1+1+5=1+2+4=1+3+3=2+2+3Different three-digit numbers can ...
aDongying aijian science and Trade Co Ltd Dongying aijian科学和贸易Co有限公司[translate] aTurn step 转动步[translate] aHow many 3-digit numbers are there in which the number of even digits is even? 多少个3数字数字有没有在哪些均匀数字的数量是均匀的?[translate]...
百度试题 结果1 题目How many three-digit whole numbers are there such that the digit sum is ? A. 2 B. 4 C. 6 D. 8 E. 10 相关知识点: 试题来源: 解析 E, , , , , , , , , 总共有10个 反馈 收藏
结果1 题目 17. How many three-digit numbers are there such thatthe product of their digits is a prime number?(Remember 1 is not a prime number.) B(A)15(B)12C)17D)20(E)21 相关知识点: 试题来源: 解析 答案见上 反馈 收藏 ...
【题目】17.有多少个三位数,其各位数字的乘积是质数17. How many three-digit numbers are there such that(注:1不是质数)?the product of their digits is a prime number?(A)15(B)12(C)17(Remember1 is nt a prime number )(D)20(E)21(A)15(B)12(C)17(D)20(E)21 ...
How many three-digit numbers are there in which any two adjacent digits differ by 3? A. 12 B. 14 C. 16 D. 18 E. 20 相关知识点: 试题来源: 解析 E The first digit can be anything from 1 to 9. Where possible, we can reduce this by three or increase it by three to get the ...