QUESTION: 329

Which of the following expressions is independent to variable X?

(4X – 3)/(X – 3).
X – (1 + 2X)/2.
4X – 1 – 4(1 – X ).
(X + 2)2 – X2.
X/(4X) + 4X/4.

Answer(s): B

Explanation:

Simplify all the expressions to see where X disappears.
Answer B: X – (1+2X)/2 = X – ½ - X = -1/2 and this answer as you can see is not dependent on the variable X.

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QUESTION: 330

If (A + 2)2 = (A + 5)2, what could be the value of A?

1.5.
-2.5.
-3.5.
2.5
3.

Answer(s): C

Explanation:

Plug in the answers to back solve this question. Input A = -3.5 and you’ll get (-1.5)2 = (1.5)2

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QUESTION: 331

If A2 (B + C) = 20, (A, B and C are all integers bigger than 1), what is the value of the expression (B + C – A)?

Answer(s): C

Explanation:

Because they are all integers bigger than 1, the only multiplication can be 4 x 5 = 20. Because A is an integer, A2 can’t be 5 therefore its 4 (A = 2). A = 2 B + C = 5. B + C – A = 5 – 2 = 3.

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QUESTION: 332

If (A-B-C+D = 13) and (A+B-C-D = 5), what is the value of (B-D)2?

Answer(s): A

Explanation:

Subtract equation 2 from equation 1 and you’ll get: -2B +2D = 8 ---> (B-D) 2 = 16.

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Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 83)

QUESTION: 329

Explanation:

QUESTION: 330

Explanation:

QUESTION: 331

Explanation:

QUESTION: 332

Explanation: