If f and g are distinct prime numbers less than 10, which of the following cannot be the product of f and g?(分数:5.00)A.6B.9C.10D.14E.15 相关知识点: 试题来源: 解析 B 题目要求找出两个不同的素数f和g(均小于10)的乘积不可能的结果。首先,小于10的素数有2、3、5、7。列出所有不同...
If p and r are prime numbers, which of the following must also be prime? A. pr B. p+r C. pr+1 D. p2+r2 E. None of the above 相关知识点: 试题来源: 解析E 正确答案:E 解析:若p和r是质数(prime number),则下面哪一个也一定是质数?解:本题的正确答案为(E)。此题可用排除法。质数...
【GRE真题答案解析】GRE考满分为考生准备GRE 数学QR真题答案解析,If a and b are prime numbers, such that a > b, which of the following cannot be true?
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Forn < 2, we returnfalseimmediately. For higher numbers, we precompute the prime numbers in theprimesarray. As a result, we canefficiently determine ifprimes[i]is true for any i in the range[2,n). When bothiandn-iare prime numbers, we returntrue. ...
If a and b are both prime numbers, a multiplied by 3 plus b multiplied by 7 equals 41, please figure out the sum of a and b? 相关知识点: 试题来源: 解析7题目给出a和b为质数,且3a +7b=41。需要找到满足条件的a和b之和。首先,考虑可能的质数b值。尝试代入不同的质数:当b=2时,3a +7...
【题目】If a,b,and c are prime numbers,which of the following could also be prime?L. a +b+c$$ I I . a + b + a + c $$$ I I I . c + b + b + c $$ 相关知识点: 试题来源: 解析 【解析】选第2个选项! 用特殊值法很简单 prime number是质数的意思 反馈...
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👉质数和合数 Prime and Composite Number 质数是有且只有两个正因数(1和本身)的正整数。 2是质数里唯一的偶数。 💡 If x and y are integers, and w=x²y+x+3y, which of the following statements must be true?(多选) A.If w is even, ...
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