How many positive integers k are there such that 100k is a factor of (22)(3)(53) ?() A. None B. One C. TWO D. Three E. Four 相关知识点: 试题来源: 解析 E [解析] (2)2(3)(53)=(2×5)2(3)(5)=100×3×5,要使100k是(2)2(3)(53)的一个因子,则k应为3×5的一个...
How many positive integers n are there such that n is a multiple of 5, and the least common multiple of 5! and n equals 5 times the greatest common divisor of 10! and n? (2020 AMC 12A Problem, Question #21) A.12 B.24 C.36 D.48 E.72...
百度试题 结果1 题目1. Berapakah nombor positif yang terdapat antara -6 dan 10?How many positive integers are there between-6 and 10? D A 4 B 8 C 9 D 10 相关知识点: 试题来源: 解析 D 反馈 收藏
How many positive integers n are there such that 1+2+⋯+n is a factor of 7n?相关知识点: 试题来源: 解析 3个. 1+2+⋯+n=n(n+1)2, 根据题意: n(n+1)2×m=7n(m⩾1)(n+1)×m=14n=14m−1, 由于n为正整数,则满足条件的有 当m=1时,n=14−1=13, 当m=2时,n=142−...
1How many two-digit positive integers are there such that the sum of the two- digit positive integer and the number formed by reversing the digits of the two-digit positive integer is a square number?有多少个两位正整数,使得两位正整数与两位正整数的数字对位所形成的数之和是平方数?A.5B.6C....
How many positive three-digit integers are there such that each digit is an od number less than 答案 111,113,115,131,133,135,151,153,155311,313,315,331,333,335,351,353,355511,513,515,531,533,535,551,553,5553的3次方共27个相关推荐 1How many positive three-digit integers are there su...
1【题目】How many pairs of positive integers (a,b)are there s uch that a and b have no common factors greater th a14b an 1 and×is an integer?()b9a A.4 B.6 C.9 D.12 E.infinitely many 2How many pairs of positive integers (a,b) are there such that a and b have no co...
答:2000到2999之间的数字都符合条件,所以共有2999-2000+1=1000个,即【one thousand integers.】 分析总结。 问题是4位数的正整数中有多少个的千位数是2的结果一 题目 How many four-digit positive integers are there with thousands digit 答案 问题是【4位数的正整数中有多少个的千位数是2的?】答:2000到29...
are there such that gcd(a,b)=1 and ab+14b9a is an integer?( ) A.4 B.6 C.9 D.12 E.infinitely many 相关知识点: 试题来源: 解析 A 结果一 题目 How many pairs of positive integers (a,b) are there such that gcd(a,b)=1 and ab+14b9a is an integer?( )A.4B.6C.9D.12E....
is there at least 1 positive integer n such that mn⩽m+n?( ) A.4 B.6 C.9 D.12 E.infinitely many相关知识点: 试题来源: 解析 E For any m we can pick n=1, we get m⋅1⩽m+1, therefore the answer is infinitely many. Another solution, slightly similar to this first one wo...