Which of the following is a prime number?( ). A. 2017B. 2018C. 2015D. 2016相关知识点: 试题来源: 解析 A 这道题的含义是:四个选项中哪个选项是质数; 首先明确质数的含义,质数是指在大于1的自然数中,除了1和它本身以外不再有其他因数的自然数. 2017只有1和它本身两个因数,所以它是质数; 2018=2...
百度试题 结果1 题目What is not a prime number? A. 13 B. 17 C. 21 D. 23 相关知识点: 试题来源: 解析 C。本题考查质数的概念。21 可以分解为 3×7,所以它不是质数。13、17、23 都只能被 1 和自身整除,是质数。反馈 收藏
百度试题 结果1 题目Which of the following is not a prime number? A. 2 B. 5 C. 7 D. 8 相关知识点: 试题来源: 解析 D 反馈 收藏
Which of the following numbers is a prime number? A. 12 B. 15 C. 17 D. 18 相关知识点: 试题来源: 解析 C。本题考查质数的概念。质数是指一个大于 1 的自然数,除了 1 和它自身外,不能被其他自然数整除的数。12 可以被 2、3、4、6 整除;15 可以被 3、5 整除;18 可以被 2、3、6、...
is a prime number?( )A. p2+16 B. p2+24 C. p2+26 D. p2+46 E. p2+96 相关知识点: 试题来源: 解析 C Because squares of a non−multiple of 3 is always 1 mod 3, the only expression is always a multiple of 3 is (C) p2+26. This is excluding when p=0 mod 3, which onl...
We divide 507 by all the prime numbers smaller than 23. 507\div3 = 169 507 is not a prime number. (6) 28\times28=784 (> 741) We divide 741 by all the prime numbers smaller than 28. 741\div3 =247 741 is not a prime number.反馈...
百度试题 结果1 题目7 is a prime number. ( ) 相关知识点: 试题来源: 解析 正确 反馈 收藏
utm.edu/notes/faq/WhyCalledPrimes The property of being a prime is called primality and the word prime is also used as an adjective. Since o is the only even prime number the term odd prime refers to any prime number greater than o.参考: en. *** /wiki/Prime_number ...
A prime13. A prime number is called a jillyprim ewhen doublin gi tand adding Iresult sin anothe rprime .How man ynumber sles stha n15 are jillyprimes? (Not etha t Ii sno t aprime.)(A)2(B)3(C)4 相关知识点: 试题来源: 解析 13.解法1小于15的数中有2、3、5、7、11、13...
反例：25