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Scaling Circles

posted on April 16, 2015

The area of circle is , and the area of circle is . What is ratio of the circumference of circle to the circumference of circle . (A) 2.5 : 1      (B) 5 : 2      (C) 5 : 4    (D) 25 : 16      (E) …

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Filed Under: GMAT, GRE Tagged With: Circles, Geometry

Do You Know Your Divisibility Rules

posted on April 15, 2015

For which of the following values of is NOT an integer? (A)      (B)      (C)      (D)      (E) [math]7[/math] …

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Filed Under: GMAT, GRE Tagged With: Arithmetic, Divisibility, Number Properties

The Power of Automaticity

The Power of Automaticity

posted on April 14, 2015

Automaticity is the ability to do things without occupying the mind with the low-level details required, allowing it to become an automatic response pattern or habit. It is usually the result of …

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Filed Under: General, GMAT, GRE Tagged With: Automaticity, Problem Solving

An LCM DS Problem

posted on April 13, 2015

Is x divisible by 12? (1) x is divisible by 3 and 4. (2) x is divisible by 2 and 6. …

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Filed Under: GMAT Tagged With: Data Sufficiency, Divisibility, LCM, Number Properties

Testing Numbers in Quantitative Comparison

posted on April 10, 2015

, , and are integers, and is greater than Quantity A                              Quantity B                                               (A) Quantity A is greater. (B) Quantity B is …

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Filed Under: GRE Tagged With: Exponents and Roots, Picking Numbers, Quantitative Comparison

Factors in Factorials 1

posted on April 10, 2015

For how many positive integer values of is a factor of ? (A) 11      (B) 12      (C) 13      (D) 14      (E) 15 …

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Filed Under: GMAT, GRE Tagged With: Arithmetic, Factorials, Factoring, Number Properties

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