0. Donna likes all numbers that are not divisible by3 and Sandra likes all numbers that have no digits divisible by3. How many four-digit numbers are there that both Donna and Sandra like?Donna 喜欢不能被3整除的所有数字,Sandra 喜欢各个数位上的数字都不能被3整除的所有数字。请问有多少个四...
Which of the following numbers is divisible by 3 but not divisible by 9?A.333B.2015C.2016D.12345 答案 D哪个数可以整除3不能整除9?考察3和9的整除特征: 各位数字之和能被3整除,则这个数能被3整除;各位数字之和能被9整除,则这个数能被9整除.相关推荐 1Which of the following numbers is divisible...
Remark 3: One can generalise the Theorem and give a simple formula for the natural density of the set of square-free numbers which are divisible by each of the elements in a finite set of primes and not divisible by any of the elements i... G Caglayan - 《Mathematical Gazette》 被引...
3) Sum of first n even numbers = n ( n + 1) 4) Even numbers divisible by 2 can be expressed as 2n, n is an integer other than zero. 5) Odd numbers which are not divisible by 2 can be expressed as 2(n + 1), n is an integer. ...
Which of the following numbers is neither divisible by 2 nor 5? A. 456 B. 345 C. 234 D. 123 相关知识点: 试题来源: 解析D Numbers divisible by 2: even numbers; Numbers not divisible by 2: odd numbers→345, 123; Numbers divisible by 5: ending in 0 or 5; ...
Even numbers not divisible by 3 will typically require at least four consecutive integers, e.g. 38 is 8 + 9 + 10 + 11, while 76 may not have a shorter workable sequence than 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13. I *think* the general trick is to figure out how to ...
百度试题 结果1 题目Question 1. Which of following numbers is divisible by 3? B A2468 B 3579111111234 相关知识点: 试题来源: 解析 B 反馈 收藏
How many integers a from 1 to 1000 are there such that a^{100} -1 is divisible by 1000? How many integers are there in the set (1, 2, 3, . . . , 1000) that are not divisible by either 6 or 8? How many numbers are there between 1 and 1000 (both inclusive) which...
Since the last two digits are 23, the sum of the digits is 2+3=5 (therefore it is not divisible by three). However certain numbers can be added to make the sum of the digits a multiple of three. 5+1=6, 5+4=9, and so on. However since the largest four-digit number ending ...
Which ones are divisible by 4? 234 789 7756 8865 3728 8064相关知识点: 试题来源: 解析 能被2整除:234,7756,3728,8064. 能被5整除:8865; 能被4整除:7756,3728,8064. 被2整除:末尾是2,4,6,8,0; 被4整除:末两位是4的倍数即可; 被5整除:末尾是0或5.反馈...