prime numbers is less than 100. Four of the 5 prime numbers have the same units digit. What is the median of the 5 prime numbers? 相关知识点: 试题来源: 解析 37. 5个不同质数的和是200,每个质数都小于100,其中4个质数具有相同的单位数字,那么质数的中值为多少? 由题4个质数具有相同的单位数字...
If x and y are different prime numbers, each greater than 2, which of the following must be true ?()Ⅰx+y≠91 Ⅱx-y is an even integer. Ⅲ is not an integer. 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(...
Natural numbers all of whose prime divisors (even or odd in number) belong to special sets are considered. It is proved that numbers with an odd number of different prime divisors predominate; more precisely, the difference between these numbers not exceeding a given x tends to infinity with ...
我觉得这题不严谨啊，Four different prime numbers are factors of 。。。不代表只有这四个factors啊，...
If x and y are different prime numbers, each greater than 2, which of the following must betrue? I II x - y is an even integer. III is not an integer. 选项: A、II onlyI and II only B、I and III only C、II and III only...
Given three different prime numbers p1, p2 and p3 satisfy equation p1+p2+p3=202. Find the maximum value of p1×p2×p3. 相关知识点: 试题来源: 解析 19982. 因为三个质数之和为偶数,可得其中一个必然为2. 余下2个数字之和为200, 由于要拆成2个质数,且两数之积为最大. 考虑到97和103皆是...
The sum of three different prime numbers is 27. Find the three prime numbers. There are 3 possible combinations. 27=++. 27=++. 27=++.. 相关知识点: 试题来源: 解析 3;5;19;3;7;17;3;11;13. 27=3+5+19 27=3+7+17 27=3+11+13 . ...
Public key encryption (also known as “asymmetric encryption”) eliminates the problem of having to share the key [4]. Prime numbers To understand public key encryption, you might need a quick refresh on prime numbers. A prime number is a whole number greater than 1 whose only factors are ...
(1) Four different prime numbers are factors of 2n. (2) Four different prime numbers are factors of n2n2 . 选项: A、 Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B、 Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. ...
$$ \begin{aligned} \frac{\partial \Phi_b }{{\partial {{\mathbf{q}}}_u }} = & \int_0^L {(2u^{\prime} + u^{{\prime} 2} + w^{{\prime} 2} + v^{{\prime} 2} )(2{\mathbf{U^{\prime}}} + 2u^{\prime}{\mathbf{U^{\prime}}}){\text{d}}s} , \\ \frac{\par...