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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.

For what range of values of 'x' will the inequality 15x -

> 1?

	A) x > 0.4
	B) x < 1/3
	C) -1/3 < x < 0.4, x > 15/2
	D) -1/3 < x < 0, x > 2/5
	E) x < -1/3 and x > 2/5

The sum of the fourth and twelfth term of an arithmetic progression is 20. What is the sum of the first 15 terms of the arithmetic progression?

	A) 300
	B) 120
	C) 150
	D) 170
	E) 270

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?

	A) 22 years
	B) 30 years
	C) 44 years
	D) 32 years
	E) None of these

In the first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7, and a remainder 9 when divided by 11?

	A) 11
	B) 14
	C) 12
	D) 13
	E) 10

If the mean of numbers 28, x, 42, 78 and 104 is 62, then what is the mean of 128, 255, 511, 1023 and x?

	A) 395
	B) 275
	C) 355
	D) 415
	E) 365


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