1,2,15,23,39,47,57,61,78,81,91,哪是质数哪是合数哪是奇数哪是...答:质数:2,23,47,61,合数:15,39,57,81,91,奇数:1,15,23,39,47,57,61,81,91,偶数:2,78,
13,94,70,24,29,41,46,61,23,57,63。78,79,87哪是合数哪是质数?答:13,94,70,24,29,41,46,61,23,57,63。78,79,87中 (94,70,24,46,57,63,78,87)是合数 (13,29,41,61,23,79)是质数
请问1-100内哪些数是质数,哪些是合数?答:50,51,52,54,55,56,57,58,60,62,63,64,65,66,68,69,70,72,74,75,76,77,78,80,81,82,84,85,86,87,88,90,91,92,93,94,95,96,98,99。合数 数学用语,指自然数中除了能被1和本身整除外,还能被其他的数整除的数。"0"“1”既不是质数也不是合数。质数 质数(prime number)...