If x is a prime number,y is an integer ,and x^(21-x)=x^(y^2+3),then xy^2=_____

If x is a prime number,y is an integer ,and x^(21-x)=x^(y^2+3),then xy^2=_____ 以下是我做的几道题1.Given a,b,c are positive integers,and a,b are prime numbers,(a的3次方＋b的c次方＋a）＝2005 ,then the value of a＋b＋c is（ ）A．14 B．13 C．12 D． 11(英汉词典 positive integers：正整数.prime numb The heart is numb 英语翻译1.In the xy-plane,the line with equation y=5x-10 crosses the x-axis at the point with coordinates(a,b).What is the value of 2.If m is the greatest prime factor of 38 and n is the greatest prime factor of 100,what is the value of m+n?那 求这个程序的算法流程图或者文字说明#include int main() {int prime(int);int n; printf(input an integer:);scanf(%d,&n);if (prime(n)) printf(%d is a prime. ,n);else printf(%d is not a prime. ,n);return 0;} int prime(int n){int 一道GMAT数学题求解.If y≠3 and 3x/y is a prime integer greater than 2,which of the following must be true?1.x=y2.y=13.x and y are prime integers.A NoneB 1 onlyC 2 onlyD 3 onlyE 1 and 3答案给出的是A，我觉得选B，请问条件1有什 If teh n-th prime number is 47,the n If p is a prime number,how many factors does pnhave?抱歉，我没有看懂你的解释。 if 7 is less than 4,then 7 is not a prime number（素数）.7 is not less than 4._____________________7 is a prime number.就是不知道横线里面填什么!求高人指教一二! 什么是prime-saturatedGMAT的一道题：A positive integer n is said to be prime-saturatedif the protuct of all the different positive prime factors of n is less than the square root of n.What is the greatest two-digit prime-saturated integer? 用Python寻找前n个质数output是这样：Find the first M prime numbers100 :3 is a prime number1 :5 is a prime number2 :7 is a prime number3 :11 is a prime number4 :13 is a prime number5 :17 is a prime number6 :19 is a prime number7 :23 is a pri 有几道GMAT数学题弄不懂,1、If 1050（是10的50次方） – 74 is written as an integer in base 10 notation,what is the sum of the digits in that integer?2、If x > 0,then 1/[√(2x)+√x] =3、A positive integer n is said to be “prime-sa because love is numb,so it is ok if only you can make the other side happy.中文 SAT数学试题If n is any prime number greater than 2,which of the followying CANNOT be a prime numberA n-4B n-3C n-1D n+2E n+5 If we let be the greatest prime number not more than a ,then the result of the expression is ( ).A.1333 B.1999 C.2001 D.2249 急If we let be the greatest prime unmber not more than a,then the result of the expression ×× is( ) A.1333 B.1999 C.2001 D.2249 英语翻译If we let be the greatest prime number not more than a,than the result of the expression< ×× > is ( ) 这是一道数学题,请翻译. c语言编写函数判断素数#include int isPrime(int i);main(){ int number ;printf(Please input a number to test if it is a prime: );scanf(%d,&number);if (isprime(number==1)) //调用判断素数的函数isPrimeprintf(Is a prime! );elseprin