Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 100)

Page 100 of 182

What is the sum of squares of the first two positive odd integers if the sum of squares of the first two positive even integers is X?

  1. X.
  2. X/3.
  3. X/2.
  4. X/6.
  5. 3X/4.

Answer(s): C

Explanation:

The squares of the first two odd numbers are: 12 + 32 = 10. The squares of the first two even numbers are: 22 + 42 = 20.



A carousel spins at a rate of ½ a round per second. If a point on its circumference is located 0.5 meters from the center of rotation, how many times approximately will this point reach its starting point in two minutes?

  1. 25.
  2. 30.
  3. 60.
  4. 120.
  5. 180.

Answer(s): C

Explanation:

If the carousel spins half a turn in one second then it spins once every two seconds. In two minutes there are 120 seconds and therefore the point will reach its starting point (120 / 2 = 60) times, no matter how far it is from the center of the circle.



There are 7 players in a bowling team with an average weight of 85 Kg. If two new players join the team, one weighs 110 Kg and the second weighs 60 Kg, what will be the new average weight?

  1. 75 Kg.
  2. 80 Kg.
  3. 85 Kg.
  4. 90 Kg.
  5. 92 Kg.

Answer(s): C

Explanation:

The trick to this question is to notice that the average weight of the two new players is exactly 85 Kg and so when they join the team, the average weight stays the same.



The number of hats that Sarah owns is 5 times bigger than the number Nicky owns. If Sarah gives 6 hats to Nicky, they will have the same number of hats. How many hats does Sharon own now?

  1. 5.
  2. 2.
  3. 3.
  4. 4.
  5. 6.

Answer(s): C

Explanation:

Let X be the number of hats that Nicky owns, Sarah owns 5X. 5X – 6 = X + 6 X = 3.



Page 100 of 182



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