1015182025263032354042455558607078848594951001051121251301501803的倍数有（15,30,42,45,60,78,84,105,150,180）5的倍数有（10,15,20,25,30,35,40,45,55,60,70,85,95,100,105,125,13...

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　　在50——80之中5的倍数3的倍数7的倍数6的倍数8的倍数在35-55奇数有偶数有在1911151719212733353741454957657281质数有合数有奇数有3的倍数有

　　在50——80之中5的倍数：50,55,60,65,70,75,803的倍数51,54,57,60,63,66,69,72,75,78,81,84,87,907的倍数:56,63,70,776的倍数：54,60,66,72,788的倍数:56,64,72,80在35-55奇数有:35,37,39,41,43,45,47,49,51,53,55偶数有:36,38,40,42,44,46,48,50,52,54在1911151719212733353741454957657281质数有:1,11,17,19,37,41合数有:9,15,21,27,33,35,45,49,57,65,72,81奇数有:1,9,11,15,17,19,21,27,33,35,37,41,45,49,57,65,72,813的倍数有:9,15,21,27,33,45,57,72,81