数字推理题:1,7,7,9,3,( )
人气:456 ℃ 时间:2020-03-12 23:32:46
解答
相乘取尾数!
1*7=7 ---尾数为7
7*7=49 ---尾数为9
7*9=63 ---尾数为3
9*3=27 ---尾数为7
相乘取尾数,所以()=7
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