数学真题一道Prime numbers k and n are each greater than 2,and they differ by 4.If there is no prime number between k and n,what is the least possible value of k+n?

数学真题一道Prime numbers k and n are each greater than 2,and they differ by 4.If there is no prime number between k and n,what is the least possible value of k+n? THE SOLITUDE OF PRIME NUMBERS怎么样 会英语和数学的来I'm the product of four prime numbers.My three digits are all prime and different.The sum of my prime factors is 30.Who am 急 How many distinct composite numbers can be formed by adding 2 of the first 5 prime numbers?SAT1的数学题,这题怎么理解? 求一道 hust acm解题报告：Prime's Sum Again.Prime's Sum AgainDescriptionAs is known to all,a prime number is a number which can only be divided by 1 and itself.For example:2,3 and 5 are all prime numbers but 4 and 6 are not,because 4 has anoth Express the following numbers as products of their prime From the list of two-digit prime numbers, 质数的孤独 THE SOLITUDE OF PRIME NUMBERS怎么样 what is the sum of the first five prime numbers Are more prime numbers even or odd?why 一道积分数学真题.有点搞不懂~ 求考研数学一一道真题的答案, SAT数学真题The least and greatest numbers in a list of 7real numbers are 2 and 20,respectively.The median of the list is 6,and thenumber 3 occurs most often in the list.Which of the following could be theaverage (arithmetic mean) of the numbers i Prime prime Prime each of the following numbers as a product of prime factors是什麼意思?上面打漏字了Express each of the following numbers as a product of prime factors 求助一道PREP 数学DS题...If r and s are positive integers,is r/s an integer?(1) Every factor of s is also a factor of r.(2) Every prime factor of s is also a prime factor of r.但我觉得AB是一个道理,都不应该选啊...犯迷糊,..