3580组成的数是奇数有几个组成的数是五倍数有几个组成的数既是两位数又是五倍?
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5803,8503,5083,8053,3085,8035,3805,8035,853,583,385,835,805,803,305,503,85,83,53,35,3,5
组成的奇数有22个,
3580,3850,5380,5830,8350,8530,3085,3805,8035,8305,350,530,380,830,580,850,305,805,385,835,30,50,80,35,85,5
5的倍数有26个
既是5的倍数,又是2位数的有5个
组成的奇数有22个,
3580,3850,5380,5830,8350,8530,3085,3805,8035,8305,350,530,380,830,580,850,305,805,385,835,30,50,80,35,85,5
5的倍数有26个
既是5的倍数,又是2位数的有5个
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