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　　2016年1月10日GRE数学机经的相关内容：

　　.Out of 100 ladies attending the church fete, 85 had a white handbag; 75 had black shoes;

　　60 carried an umbrella; 90 wore a ring, How many ladies must have had all four items?

　　(A)15 (B)35 (C)5 (D)10 (E)25

　　The daily rate for a hotel room that sleeps 4 people is $39 for one person and x dollars for each additional person. If 3 people take the room for one day and each pays $29 for the room, what is the value of x?

　　(A) 6 (B) 8 (C) 12 (D) 13 (E) 24

　　A store currently charges the same price for each towel that it sells. If the current price of each towel was to be increased by $1, 10 fewer of the towels could be bought for $120, excluding sales tax. What is the current price of each towel?

　　(A)$ 1 (B)$ 2 (C)$3 (D)$ 4 (E)$ 12

　　某种溶液浓度为 125gram per liter, 转换成 ounce per gallon,求表达式 已知 1 ounce=28.xxx gram and 1 gallon=3.875 liter

　　How many positive w hole numbers less than 81 are NOT equal to squares of w hole numbles?

　　满足方程 x/13+y/39=1 的正整数对(x,y)有多少对。

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