奇数而不是质数的数有?哪些

问题描述:

奇数而不是质数的数有?哪些

奇数而不是质数的数有无数个,50以内9,15,21,25,33,35,39,45,49 ,100以内9,15,21,25,33,35,39,45,49 ,51,55,57,63,65,69,75,,81,85,87.91,93,95,99

50以内的有9,15,21,25,33,35,39,45,49

9,15,21,25,33,35,39..
也有无数多个