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GMAT Math practice - (5/36 questions - random)

GMAT practice questions. Once you complete the quiz you will see your score and explanation of the correct answer.

If m, s are the average and standard deviation of integers a, b, c, and d, is s > 0?

(1) m > a

(2) a + b + c + d = 0

	A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
	B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
	C) BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
	D) EACH statement ALONE is sufficient to answer the question asked.
	E) Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

What is the equation of a circle of radius 6 units centered at (3, 2)?

	A) x2 + y2 + 6x – 4y = 23
	B) x2 + y2 - 6x + 4y = 23
	C) x2 + y2 + 6x + 4y = 23
	D) x2 + y2 - 6x – 4y = - 23
	E) x2 + y2 - 6x – 4y = 23

Three years back, a father was 24 years older than his son. At present the father is 5 times as old as the son. How old will the son be three years from now?

	A) 12 years
	B) 6 years
	C) 3 years
	D) 9 years
	E) 27 years

Which of the following inequalities have a finite range of values of "x" satisfying them?

	A) x2 + 5x + 6 > 0
	B) \|x + 2\| > 4
	C) 9x - 7 < 3x + 14
	D) x2 - 4x + 3 < 0
	E) (B) and (D)

If the price of gasoline increases by 25% and Ron intends to spend only 15% more on gasoline, by what % should he reduce the quantity of petrol that he buys?

	A) 10%
	B) 12.5%
	C) 8%
	D) 12%
	E) 6.66%


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