We thus want one of n-1 and n+1 to be a prime and the other to be a product of two primes. All of these primes have to be odd since n-1 and n+1 have the same parity and there exists only one even prime.Call a positive integer a ‘semiprime’ if it is the product of ...
2 n is a positive integer.If meaningful for all real numbers a,then (). (A)n is an odd number. (B)n is an even number. (C)n can be either odd or even. (D)There is no suchn that satisfies the condition. 答案相关推荐 1 2 n is a positive integer.If meaningful for all rea...
1What is the tens digit of positive integer x ?() (1)x divided by 100 has a remainder of 30. (2)x divided by 110 has a remainder of 30. A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条...
If is a positive integer such that the units digit of is , what is the units digit of ? A.1 B.3 C.5 D.7 E.9 显示答案 登录后才可以添加做题笔记哦,还没有账号? 马上注册 KMF 解析 网友解析 题目数据 收起 【过往命中时间】2024年11月04日中国线上;2024年09月18日中国线上;202...
K. MitraUp-SamplerTime-Domain CharacterizationAn up-sampler with an up-sampling factorL, where Lis a positive integer, develops an output sequence with a sampling rate that is Ltimes larger than that of the input sequencex[n]Block-diagram representation][nxuLx[n]][nxu3Copyright 2001, S. K...
15. A positive integer x with n ≥2 digits is written down twice in a row and the 2n-digit number so obtained is divisible by x2. Prove that the first two digits of x are I and 4 in that order. 相关知识点: 试题来源: 解析 15.解 由题目条件知 (10'+1)x 能被x2整除,故可令 ...
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...
GMAT 考满分题库If n is a positive integer, what is the remainder when the positive integer n is divided by 5?(1) If n=p+(p+1)+(p+2), and the remainder when p is divided by 5 is 1.(2) If n=s(s+1)(s+2), and the remainder when s is divided by 5 is 1.
If n is a positive integer, which of the following is a possible value of |56 - 5n|? 选项: A、7 B、9 C、12 D、15 E、20 答案: B 提问列表 提问: 请问徐小梅老师,这题为什么选B呢?我当时觉得没一个选项符合条件。 5n是5的倍数,所以个位为0或5。如果个位为0,则56-5n的个位=6-0=6;...
n is a positive integer.Quantity A:The remainder when is divided by nQuantity B:1 A. Quantity A is greater. B.Quantity B is greater. C.The two quantities are equal. D. The relationship cannot be determined from the information given. 显示答案 登录后才可以添加做题笔记哦,还没有账号...