What is the smallest positive integer that is divisible by 1, 2, 3, 4, and 5( ).A.720B.360C.120D.60 答案 DSince 4 is already a multiple of 2, the 1 c.m. of 1, 2, 3, 4, 5 is 3×4×5=60.能被1,2,3,4,5整除的最小正整数是( ).A.720 B.360 C.120 D.60因为4能...
This gives us 105* 2=210 which is divisible by 3, 5, and 7 and is also between 200 and 300. The number is 210.若一个数能被3,5和7整除,那么它一定能被它们的最小公倍数整除.因为3,5 和7除了1之外没有共同的因子,所以这三个数的最小公倍数是它们的乘积.因为3* 5* 7=105不在200到300...
If this is a T-F question, the answer is false. It is true that if a number is divisible by 6, it also divisible by 3. This is true because 6 is divisible by 3. However, the converse -- If a number is divisible by 3, it is divisible by 6, is false. A counterexample is 15...
The number 60 is divisible by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The numbers that can divide 60 (with remainder = 0) can also be called... Learn more about this topic: Finding the Prime Factorization of a Number | Meaning & Examples ...
To find a number between 120 and 130 that is divisible by 3 and has a digit sum divisible by 4, we first consider the numbers in that range: 121, 122, 123, 124, 125, 126, 127, 128, 129. Next, we calculate the digit sum of each number: 121 (1+2+1=4), ...
What is the total number of integers between 100 and 200 that are divisible by 3? (分数:5.00) A. 33 √ B. 32 C. 31 D. 30 E. 29 相关知识点: 试题来源: 解析 解析:对于区间[a,b]中有多少个数能够被数n整除,计算方法如下:第一步:把b往小里凑。找到最近的n的倍数,记为r;比如例题中...
What is the least positive integer that is divisible by each of the integers 1 through 7, inclusive ?() A.420 B.840 C.1,260 D.2,520 E.5,040 相关知识点: 试题来源: 解析 A [解析] 该题也即让考生求1,2,3,4,5,6和7这7个数的最小公倍数。根据最小公倍的求解公式可得其最小公...
Three consecutive integers have a sum of 246. What are the three integers? Two consecutive integers have a sum of 91. What are the two integers? The sum of the first and last of four consecutive odd integers is 52. What are the four integers?
Ifa,bandnare natural numbers thena2n−1+b2n−1is divisible by View Solution Prove that for any natural numbers n,7n−2nis divisible by 5. View Solution For every natural numbern,n(n2−1)is divisible by View Solution Doubtnut is No.1 Study App and Learning App with Instant Video ...
is (say) bigger than 1, it is not immediately obvious that the same is true for, say, . But one can check using algebra that if , then , and similarly with the inequalities reversed; this allows the argument as stated to be made rigorous. (One can also argue by considering the recta...