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1,9,11,15,17,19,21,27,33,35,37,41,45,49,57,65,72,81合数有,偶数有,3的倍数有

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解决时间 2021-04-18 08:12
  • 提问者网友:欺烟
  • 2021-04-17 07:15
1,9,11,15,17,19,21,27,33,35,37,41,45,49,57,65,72,81合数有,偶数有,3的倍数有
最佳答案
  • 五星知识达人网友:十鸦
  • 2021-04-17 07:52
回答 共1条 2013-03-12 20:09筱璇3|一级写出五个质数,写出五个合数:2,3,5,7,11;4,6,8,9,10.
1~30各数中: 质数有(2,3,5,7,11,13,15,17,19,23,29)合数有(4,6,8,9,10,12,14,15,18,20,21,22,24,26,28,30)奇数有(1,3,5,7,9,11,13,15,17,19,21,23,25,27,29)偶数有(2,4,6,8,10,12,14,16,18,20,22,24,26,28,30)是3的倍数的数有(3,6,9,12,15,18,21,24,27,30)是5的倍数有(5,10,15,20,25,30)是2和5的倍数有(10,20,30)是3和5的倍数有(15,30)是2,3和5的倍数有(30)追问1,9,11,15,17,19,21,27,33,35,37,41,45,49,57,65,72,81合数有,偶数有,3的倍数有
全部回答
  • 1楼网友:走死在岁月里
  • 2021-04-17 09:17
写出五个质数,写出五个合数:2,3,5,7,11;4,6,8,9,10.
1~30各数中: 质数有(2,3,5,7,11,13,15,17,19,23,29)合数有(4,6,8,9,10,12,14,15,18,20,21,22,24,26,28,30)奇数有(1,3,5,7,9,11,13,15,17,19,21,23,25,27,29)偶数有(2,4,6,8,10,12,14,16,18,20,22,24,26,28,30)是3的倍数的数有(3,6,9,12,15,18,21,24,27,30)是5的倍数有(5,10,15,20,25,30)是2和5的倍数有(10,20,30)是3和5的倍数有(15,30)是2,3和5的倍数有(30)追问1,9,11,15,17,19,21,27,33,35,37,41,45,49,57,65,72,81合数有,偶数有,3的倍数有
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