结果1 题目How many 3-digit numbers are divisible by 相关知识点: 试题来源: 解析 意思大概是,有多少个能被7整除的3位数,共128个,做法是,最小能被7整除的三位数是105,最大994,从105到994共890个数字,除以7等于127余点东西,所以是128个 反馈 收藏 ...
How many two -digit numbers are divisible by 3? View Solution How many two digit numbers are divisible by 4 ? (a)21 (b)22 (c)24 (d)25 View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths ...
则三位数中三个数字之和能被7整除的三位数有126个, 因为三位数有900个,三位数中三个数字之和能被7整除的有126个, 所以三位数中三个数字之和不能被7整除的数有900−126=774, 故答案为:774.结果一 题目 有多少个三位数的数字之和不能被7整除?How many three-digit numbers have a sum of digits not...
a心跳动的旋律,很奇妙的感觉 The heart beats melody, very marvelous feeling[translate] a敖包 Mongolian cairn[translate] aHow many 3-digit numbers contain at least one 7? 多少个3数字数字包含一至少7 ?[translate]
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 ...
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 Different...
百度试题 结果1 题目2. How many positive three-digit numbers are divisible by 13? B(A)68(B)699(C)70(D)76(E)77 相关知识点: 试题来源: 解析 B 反馈 收藏
These three digit numbers are of the form xyx. We see that x≠0 and x≠5, as x=0 does not yield a three−digit integer and x=5 yields a number divisible by 5. The second condition is that the sum 2x+y<20. When x is 1, 2, 3, or 4, y can be any digit from 0 to 9...
To test if a number is divisible by three, you add up the digits of the number. If the sum is divisible by three, then the original number is a multiple of three. If the sum is too large, you can repeat the process until you can tell whether it is a multiple of three. This is...
结果一 题目 【题目】How many two-digit numbers have at least one 7 as a digit? ()(A)10(B)18C)19(D)20 答案 【解析】B相关推荐 1【题目】How many two-digit numbers have at least one 7 as a digit? ()(A)10(B)18C)19(D)20 ...