3.白痴题:一个圆,有7个点,问任意3个点组成的三角形与任意4个点组成的四边形的比
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it askes for the ratio of the area ? or length ?
I can't get the An.........
4.10^50-76的得数的所有位数加起来的和是多少
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mine An is 438
since the number will be 99........924 so sum all the number in each units up , it will be 48*9+2+4=438