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For your free evaluation, please complete the form below. Please be as thorough and as accurate as possible so that I can better understand your current prep status. I will follow up on your submission with a free-by-phone evaluation at a time that’s convenient for you.

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Mini Diagnostic (Optional)

This is an optional mini diagnostic test. The mini diagnostic test includes two challenging, 700-level questions - one PS and one DS. Your time for each question will be logged. Click on the start button to begin.

0:00
of

If f is the function defined by f(x)=\frac{1}{x} - \frac{1}{x-1} for all x \neq 0 and x \neq 1, then f(1 - x) =

f(x)
(1-x)f(x)
1-f(x)
-f(x)
f(x) - 1

Taylor bought two kinds of folders costing 10 cents and 15 cents each, respectively. What was the average(arithmetic mean) cost of all the folders Taylor bought?

(1) Taylor bought a total of 28 folders

(2) The total cost of the 10-cent folders Taylor bought was \frac{2}{3} of the total cost of all the folders Taylor bought.

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.

Summary


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Your Goal

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Your Current Prep Status

How long have you been studying for the GMAT?

Less than 1 Month 1 to 2 months 2 to 4 months More than 4 months

Are you currently enrolled in a prep program?

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Are you having problems with basic math?

Yes, definitely! Somewhat Not really

Are you having pacing issues?

Yes, definitely! Somewhat Not really

Do you need extra help with Data Sufficiency questions?

Yes, definitely! Somewhat Not really

Please select from the topics listed below that you would like to focus on.

Word ProblemsAlgebraNumber PropertiesGeometry
Percents Algebraic Manipulations Units Digits Triangles
Rates Inequalities Divisibility Circles
Statistics Exponents Remainders Mixed Figures
Sets Square Roots Coordinates
Combination & Permutation Sequences


Is there any additional information regarding your current prep status that you'd like to share?

Short Bio

Hi, i’m Yi Hu.

I’m not only a teacher, but a doer: I scored in the 99th percentile in both the GMAT math and the GRE math.

I’m a life-long math guy, with a B.S. in Mathematics from UCLA and a M.S. in Mathematics Finance from Courant NYU.

I enjoy nothing more than curling up with a good math problem and finding effective and intuitive ways to get to an elegant, practical solution.

I've been training students to improve their performance in standardized math exams full-time for over 5 years.

(212) 500 - 3330

yi@gmat-math-prep.com

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