By dzyubam
- **Nov 4**, 02:00 AM

Math (DS)
In a triangle ABD, B is the right angle. Point C is on BD. If you draw a line from A to C, then is triangle ABC an isosceles triangle?
1. Angle ACB is twice as large as angle ADC.
2. Angle ACB is twice as...

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By dzyubam
- **Nov 2**, 02:00 AM

Math (DS)
A plane takes off from a hill at 750 meters above sea level and lands some time later in a town located at 50 meters below sea level. During the first part of its flight, the plane gained height at a rate of 50...

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By dzyubam
- **Nov 1**, 02:00 AM

Math (DS)
If , , and are points on the plane, is ?
1.
2. Area of triangle
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By dzyubam
- **Oct 28**, 02:00 AM

Math (DS)
If , is an integer?
1. is an integer.
2.
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By dzyubam
- **Oct 25**, 02:00 AM

Math (DS)
Is divisible by ?
1.
2. is an even prime number
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By Knewton
- **Oct 24**, 09:00 AM

Here’s another quick tip for those of you still struggling with the pitfalls of Data Sufficiency.
Let’s take a look at the following Official Guide DS problem:
If p and q are positive integers and pq = 24, what is the value of p?
(1) q/6 is...

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By dzyubam
- **Oct 21**, 02:00 AM

Math (DS)
Is an integer?
1.
2.
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By Knewton
- **Oct 20**, 13:41 PM

This GMAT prep post was written by Rich Zwelling.
Who cares?” That should be the operative question on your mind as you tackle Data Sufficiency problems.
Here’s what I mean: Suppose I ask you the question “What is x?” I then give you a statement that says...

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By dzyubam
- **Oct 19**, 02:00 AM

Math (DS)
Is ?
1.
2.
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By dzyubam
- **Oct 18**, 02:00 AM

Math (DS)
Is integer odd?
1. is odd
2. is odd
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