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  5. GMAT SECTION 2: QUANTITATIVE

Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 4)

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If X is a positive integer and (405) 4 is a multiple of 3X, what is the largest possible value of X?

  1. 5.
  2. 12.
  3. 16.
  4. 20
  5. 26.

Answer(s): C

Explanation:

Find the factors of (405) 4 and see what the largest value of X can be.
405 = 81 x 5 = 9 x 9 x 5 = 3 x 3 x 3 x 3 x 5 -□(405) 4 = (3 x 3 x 3 x 3 x 5) 4 = 316 x 54.
The largest possible value of 3X that is still a factor of (405) 4 is the largest possible value of X and that is 316. X = 16. The correct answer is C.



N is a prime number bigger than 5. Which of the following expressions must be even?

  1. (N+2)2.
  2. N2+2.
  3. N (N+2).
  4. (N+1) (N+2).
  5. (N – 2)2.

Answer(s): D

Explanation:

Answer D is a multiplication of two consecutive numbers, therefore one of them must be even, and an even number multiplied by a different number is an even number.



The original price of a car was $25,200. Because the car owner thought he could get more money for the car, he increased the price of the car to 110% of its original price. After a week, the car had not sold, so the owner then discounted the price by 10%, and the car was finally sold. What price was the car sold for?

  1. $25,200
  2. $25,000
  3. $24,948
  4. $24,542
  5. $23,658

Answer(s): C

Explanation:

Pay attention, when you raise a number by X% and than you reduce X% you don’t get the original number again because the second time you took X% off you reduced it from a larger number thus answer A is not the correct one,
Let’s check:
25,200 x 1.1 = 27,720.
27,720 x 0.9 = 24,948 and not 25,200. The correct answer is C.



On a map, 1 inch represents 28 miles. How many inches would be necessary to represent a distance of 383.6 miles?

  1. 5.2
  2. 7.4
  3. 13.7
  4. 21.2
  5. 28.7

Answer(s): C

Explanation:

This is a proportion problem. Dividing the requested amount of miles by the reference amount would give us the answer in inches. 383.6 / 28 = 13.7 inches.






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