A.8 B.9 C.10 D.11A.8 B.9 C.10 D.11

admin2020-12-24  5

问题

选项 A.8
B.9
C.10
D.11

答案C

解析左上×右下-(左下十右上)=中间,则5×6-(13+7)=10。
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