GRE数学,关于圆和集合问题!Fromthetime6:15pmtothetime7:45pm.Ofthesameday,theminutehandofastandardclockdescribesanarcof.Ifthevaluedoapieceofpropertydecreasesby10percentwhilethetaxrateonthepropertyinc

Question

GRE数学,关于圆和集合问题!
From the time 6:15 pm to the time 7:45 pm .Of the same day,the minute hand of a standard clock describes an arc of . 
If the value do a piece of property decreases by 10 percent while the tax rate on the property increases by 10 percent,what is the effect on the tax?不是说税增加10% ,又问税有什么影响,啥意思?property 是额外收税?
A survey of 100 persons revealed that 72 of them had eaten at restaurant P and that 52 of them had eaten at restaurant Q.Which of the following could not be the number of persons in the survey group who had eaten at both P and 这题没有告诉即没去P也没去过Q的人数啊,

Answer 1

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