Avoiding Common Data Sufficiency Traps

Practice Questions

GMAT Quantitative Reasoning › Avoiding Common Data Sufficiency Traps

Questions

10

1

If , is $\frac{1}{x}+\frac{1}{y}=16?$

2

If , is $a>\frac{y}{x}?$

$a=\frac{\frac{1}{x}+\frac{1}{y}}{\frac{1}{y}}$
and are positive integers

3

Is

and

4

If , is the average (arithmetic mean) of the five terms in the list above less than 8?

5

Is xy > 24?

y - 2 < x
2y > x + 8

6

What is the average of the terms in set J?

The sum of any three terms in Set J is 21
Set J consists of 12 total terms.

7

If , is $\frac{x-y+z}{2z}<\frac{x}{2z}-\frac{y}{2z}-\frac{x}{y}?$

$\frac{x}{y}<-\frac{1}{2}$

8

If and are positive integers, is $\frac{x}{y}$ an integer?

Every factor of is also a factor of
Every factor of is also a factor of

9

What is the value of

10

What is the value of two-digit integer x?

The product of the two digits is 14.
x is divisible by 9.

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