To determine which of the given numbers is divisible by 9, we can use the rule that states a number is divisible by 9 if the sum of its digits is divisible by 9. Let's analyze each option step by step.1. Identify the Numbers: L
Thus the sum of the digits is 45+55+65+75+30=270, so the number is divisible by 9. We notice that the number ends in " 4 ", which is 9 more than a multiple of 5 . Thus if we subtracted 9 from our number it would be divisible by 5 , and 5⋅9=45.结果...
From1thru9,the sum is45,10 thru19,the sum is55,20 thru29is65,and30thru39is75.Thus the sum of the digits is45+55+65+75+4+5+6+7+8=240+30=270,and thus N is divisible by9. Now.refer to the above solution N=4(mod5)andN=0(mod9)From this information,we can conclude this i...
How can I use mathematical induction to prove that 5^n + 9 ^n + 2 is divisible by 4? How to prove (n^5 - n) is divisible by 30? Use mathematical induction to prove the statement is true for all positive integers n . The integer n^3 + 2n is divisible b...
GMAT 考满分题库一个正整数如果要被9整除，那么这个正整数每一个digit相加要可以被9整除（例如判断1233能不能被9整除，只要看1+2+3+3=9是不是能被9整除，只要后者能被9整除，那么1233也能被9整除），这道题是要判断25×10n+k×102n能不能被9整除，10的N次方和10的2N次方无论N是多少，digit相加都为0。
Divisibility tests and rules explained, defined and with examples for divisibility by 2,3,4,5,6,8,9,10, and 11.Divisibility Calculator
百度试题 结果1 题目d) If a number is divisible by9, by what other number is it also divisible? 相关知识点: 试题来源: 解析 Thenumbermustalsobedivisibleby3. 反馈 收藏
百度试题 结果1 题目Q5. What is the sum of all numbers between 100 and 200, which is divisible by9?B A. 1863 B. 1683 C. 1386 D. 1638 相关知识点: 试题来源: 解析 B 反馈 收藏
A positive integer is divisible by 9 if and only if the sum of its digits is divisible by 9. If n is a positive integer, for which of the following values of k is 25 × 10n + k× 102n divisible by 9? 选项: A、9 B、16 C、23 D、35 E、47 答案: E 经典答疑 发起提问 × ...
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