A解: 36^x*25^y=2^(2x)*3^(2x)*5^(2y) 。要使 (30!)/(2^(2x)*3^(2x*5^2)) 是整数,30!中质因数2的个数不能少于2x,同理, 质因数3的个数不能少于2x,质因数5的个数不能少于2y。 30!中质因数2有 (30)/2]+[(30)/4]+[(30)/8]+[(30)/(16)]=15+7+3+ 1=26(个),则 2x...
百度试题 结果1 题目Given that n is a positive integer, then 10" is ( ).(A) the product of ten ns(B) an n-digit integer(C) a(n+1)-digit integer(D) a(n-2)-digit integer 相关知识点: 试题来源: 解析 C 反馈 收藏
Ifxis a positive integer, how many positive integers less thanxare divisors ofx? x2is divisible by exactly 4 positive integers less thanx2. 2xis divisible by exactly 3 positive integers less than 2x. 选项: A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. ...
Ifnis a positive integer, what is the remainder whenis divided by 5? 选项: A、1 B、2 C、3 D、4 答案: E 提问列表 提问: 这题我的想法是3的幂次方末尾数是3,9,7,1,然后3^8n+3就是末位为7再加2为9,因为除5看末位就可以,所以余4,但是如果除以其他的数比如3,7等怎么办呢?
test case is not to be processed. There are multiple test cases. Each case contains a positive integer N, followed by N positive numbers. All the numbers in the input are less than 100. A test case with N = 0 denotes the end of input. This test case is not to be processed.[...
1Let n be a positive integer. If a positive factor of n is not equal to 1 or n, it is defined as a 'proper factor' of n.Known that there are 3 ways to represent 18 in the form of product of its 'proper factors'. There are 4 ways to represent 30 in the form of product ...
gmat数学题.if n is a positive integer,what is the remainder when (3^8n+3)+2 即3的8n+3次方加2is divided by 答案 remainder is 4.因为3^n个位数是3,9,7,1的不断循环.因为n是正整数,所以8n+3除以4的余数是3,因此3的8n+3次方的个位数永远是7.由此,(3^8n+3)+2 的个位数是9.除以5,则...
(1) 2 is not a factor of n. (2) 3 is not a factor of n. 选项: 答案: C 提问列表 提问: 感觉2 , 3 不是N 的因子,5,7 等还是可以是N 的因子,若N=5, N^2-1 的余数是10, 若N= 7, 余数为0 ,所以不通N的数值导致余数不同,所以我选了E ...
If n is a positive integer, what is the remainder when the positive integer n is divided by 5...
If n is a positive integer, what is the value of n ? (1) When n is divided by 3, the remainder is 2. (2) When is divided by 3, the remainder is 1. 选项: 答案: E 经典答疑 发起提问 提问: 点此查看答疑 DS 评分: 0 浏览: 633 学长故事 GMAT考了4次,是什么让我成功突围...