RE: 考眼力的时候又到啦! 动动脑不会老, 仔细观察下图, 请问:问号处应该填多少?

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考眼力的时候又到啦! 动动脑不会老, 仔细观察下图, 请问:问号处应该填多少?

in mental •  3 years ago 

I think it should be 40

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