Problem Solving

GMAT Question of the Day (June 20): Coordinate Geometry and Critical Reasoning

By - Jun 20, 02:00 AM   Comments [0]

Math (PS) If curves and enclose a sector on the top part of XY-plane, what is the area of this sector? (A) (B) (C) (D) (E) Question Discussion & Explanation Correct Answer - C - (click and drag your mouse to see the answer) GMAT Daily Deals Free...

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GMAT Question of the Day (June 18): Word Problem and Sentence Correction

By - Jun 18, 02:00 AM   Comments [0]

Math (PS) The box contains 10 tablets of medicine A and 15 tablets of medicine B. tablets are taken from the box at random. What is the least possible that ensures that at least two tablets of each kind are among the extracted? (A) 12 (B)...

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GMAT Question of the Day (June 14): Word Problem and Critical Reasoning

By - Jun 14, 02:00 AM   Comments [0]

Math (PS) If the power of an engine grows by 10% when the number of its cylinders is increased by one, which of the following is closest to the ratio of the power of a 9-cylinder engine to that of a 12-cylinder engine? (A) 0.69 (B) 0.71 (C) 0.72 (D)...

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GMAT Question of the Day (June 13): Combinations and Critical Reasoning

By - Jun 13, 02:00 AM   Comments [0]

Math (PS) There are 3 red chips and 2 blue chips. When arranged in a row, they form a certain color pattern, for example RBRRB. How many color patterns are possible? (A) 10 (B) 12 (C) 24 (D) 60 (E) 100 Question Discussion & Explanation Correct Answer - A - (click and drag...

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GMAT Quant: How to Solve Two Equations with Two Variables

By - Jun 12, 09:00 AM   Comments [0]

Fact: If you have two variables and only one equation, in general you will not be able to solve for the individual values of the variables.  You need two separate equations in order to solve for the individual values of each of two variables. (This...

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GMAT Question of the Day (June 11): Word Problem and Sentence Correction

By - Jun 11, 02:00 AM   Comments [0]

Math (PS) If the farmer sells 75 of his chickens, his stock of feed will last for 20 more days than planned, but if he buys 100 more chickens, he will run out of feed 15 days earlier than planned. If no chickens are sold or...

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The GMAT’s Favorite Triangles

By - Jun 8, 09:00 AM   Comments [0]

Understand the properties of the GMAT Quantitative section’s two favorite triangles!  The two special triangles are right triangles with special angles and side.  Like all right triangles, they satisfy the Pythagorean Theorem.  These two triangles are “special” because, with just a couple pieces of information, we can figure out...

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GMAT Question of the Day (June 6): Special Operations and Critical Reasoning

By - Jun 6, 02:00 AM   Comments [0]

Math (PS) If , what is the last digit of ? (A) 8 (B) 6 (C) 4 (D) 2 (E) 1 Question Discussion & Explanation Correct Answer - D - (click and drag your mouse to see the answer) GMAT Daily Deals Knewton GMAT, a powerful adaptive learning system plus exclusive GMAT Club...

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GMAT Question of the Day (June 5): Work Problem and Sentence Correction

By - Jun 5, 02:00 AM   Comments [0]

Math (PS) A furniture manufacturer has two machines, but only one can be used at a time. Machine A is utilized during the first shift and Machine B during the second shift, while both work half of the third shift. If Machine A can do the...

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GMAT Math: Special Properties of the Line y = x

By - Jun 4, 09:00 AM   Comments [0]

The 45º angle Fact: All lines with slopes of 1 make 45º angles with both the x- and y-axes. Conversely, if a line makes a 45º angles with either the x- of y-axes, you know immediately its slope must be . This first fact is true, not only...

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