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Thursday, September 20, 2007

GRE UPDATE - September 2007 Quants (updated)

Hi people,

Here is the second half of the database I amassed after intensive conflation from several sources on the net and also from numerous students who appeared for the GRE on and before 20th Sept 2007. I have tried to provide answers for as many questions as possible. And due to repeated requests for more Quants questions for the month of September 2007. Henceforth, I have expedited matters a little, trying to present as many questions as possible, yet managing to not compromise on quality. I thank all the people who have been instrumental in producing this GRE preparation material. Hope you benefit from this pool of information. Keep looking for updates.

Problem Solving :

9. If the radius of a circle is increased by 20% then the area is increased by :
Ans: 44%

10. If 1 cm on a map corresponds to an actual distance of 40 kms. And the distance on the map between Bombay and Calcutta is 37.5 cms., the actual distance between them is : (Values have been changed)
Ans: 1500 Kms.

11. If the area of two circles are in the ratio 169 : 196 then the ratio of their radii is :
Ans: 13:14

12. Two identical taps fill 2/5 of a tank in 20 minutes. When one of the taps goes dry in how many minutes will the remaining one tap fill the rest of the tank ?
Ans: 15 minutes

13. If the value of XYZ Company stock drops from $25 per share to $21 per share, what is the percent of the decrease?
Ans: 16

14. If a building b feet high casts a shadow f feet long, then, at the same time of day, a tree t feet high will cast a shadow how many feet long?
Ans: ft/b (*Several questions have been reported to be of this type)

15. At a certain ice cream parlor, customers can choose among five different ice cream flavors and can choose either a sugar cone or a waffle cone. Considering both ice cream flavor and cone type, how many distinct triple-scoop cones with three different ice cream flavors are available?
Ans: 20

16. What is the greatest value of a positive integer n such that 3n is a factor of 1815?
Ans: 30

17. portion of $7200 is invested at a 4% annual return, while the remainder is invested at a 5% annual return. If the annual income from both portions is the same, what is the total income from the two investments?
Ans: $320

18. At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour, which of the following represents the speed of the faster train, in miles per hour? (Values have been changed)
Ans: 44 (*Questions in this format, involving relative speed, have been reported to appear very rarely. These questions are common in GMAT)

19. If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?
Ans: 300

20. A rectangular tank 10" by 8" by 4" is filled with water. If all of the water is to be transferred to cube-shaped tanks, each one 3 inches on a side, how many of these smaller tanks are needed?
Ans: 12 (Values have been changed)

21. The sum of the first 100 numbers, 1 to 100 is divisible by :
Ans: 2 only. (The other choices were 2 along with other nos. such as 4 and 8 and one with all three,(i.e) 2,4, and 8)

22. A person starts multiplying consecutive positive integers from 20. How many numbers should he multiply before the will have result that will end with 3 zeroes?
Ans: 6 (10 and 11 were two of the other choices)

23. What is the minimum number of square marbles required to tile a floor of length some X metres Y cm and width Z metres W cm?
Ans: Not sure about the values of X,Y,Z, and W. But this should be a simple calculation.

24. 'A' had to do a multiplication. Instead of taking 35 as one of the multipliers, 'A' took 53. As a result, the product went up by 540. What is the new product?
Ans: 1590

25. How many words can be formed by re-arranging the letters of the word ASCENT such that A and T occupy the first and last position respectively?
Ans: 4 ! (Four factorial)

26. There are 12 yes or no questions. How many ways can these be answered?
Ans: 4096 ways (Appeared 4 times in Sept and August 2007 together)

27. A fort has provisions for 60 days. If after 15 days 500 men strengthen them and the food lasts 40 days longer, how many men are there in the fort?
Ans: 4000 (Values have been assumed)

28. The present ages of A and B are as 6 : 4. Five years ago their ages were in the ratio 5 : 3. Find their present ages.
Ans: 30,20


As of now, I could consolidate only problem solving questions. And you must understand that it is not easy to collect Quantitative Comparison type questions. Not many who have appeared for the GRE were able to recollect the quantities in the two columns. And even if they do, it takes me time to verify them .So kindly put up with the delay. And please remember, do atleast give a cursory reading through the previous month's (August 2007) Quants and Verbal questions Collection. It is important to go through the questions that appeared two months prior to your exam date.

GRE UPDATE- Sept '07 Quants (Part-1)

All the Best.
Keep Looking For Updates.

Praveen Chandar.