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2加4加6加到20是多少
更新时间: 2021-05-13 21:54:09  

1、2加4加6加到20等于110,第一种方法:

2+4+6+8+10+12+14+16+18+20=110

=(2+20)*20/4

=22*5

=110

2、第二种方法。重新排列题目(2+20)+(4+18)+(6+16)+(8+14)+(10+12)=22x5=110

关键词: 多少

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