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GRE Quantitative General Questions
Hi, I recently took a GRE class (not with powerscore but I heard you guys can help). Here are three questions that I am sure are so easy, but I just can’t see it:
1. In a certain group of people, 87 people indicated they like raspberries, 91 indicated they like strawberries, and 91 people indicated they like blueberries. Of the people surveyed, 9 liked only raspberries, 10 liked strawberries, and 40 liked all three. How many of the people surveyed liked both strawberries and blueberries, but not raspberries?
A. 21 B. 26 C. 31 D. 36 E. 41
2. There are 20 rows of seats in an auditorium. If the first row has 20 seats and each successive row has 6 more seats then the previous row, how many seats are in the auditorium?
On this question, the answer was given as 1540, but that is including the extra 6 seats starting in the first row as far as I can see it. Am I wrong on this?
3. x–(1/y) where x-(1/y) does not equal 0
What is the reciprocal?
A. 1/x – y B. –y/x C. y/(x-1) D. x/(xy–1) E. y/(xy-1)
you so much!