13.27.41.57.61.73.84.95.47.11.15.33.49.51.63.87.99,这些数字哪个是质数,哪个是合数?
问题描述:
13.27.41.57.61.73.84.95.47.11.15.33.49.51.63.87.99,这些数字哪个是质数,哪个是合数?
答
质数:13,41,61,73,47,11;
合数:27,57,84,95,15,33,49,51,63,87,99;