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The Math Beast Challenge Problem of the Week – April 2nd, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

A predator is 80 meters behind its prey, which is running away at a rate of 40 kilometers per hour. If the predator chases at 48 kilometers per hour and both animals run along a straight-line path at their respective constant rates, how long will it take, in seconds, for the predator to catch the prey? (1 kilometer = 1,000 meters)

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The Math Beast Challenge Problem of the Week – March 19th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

The sequence of numbers a1a2a3, …, an, … is defined by  for each integer n â‰¥ 1.

Quantity A
The sum of the first 20 terms of this sequence

Quantity B
The sum of the first 19 terms of this sequence

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The Math Beast Challenge Problem of the Week – March 12th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

In a school of x students, 36 are in the honors program, and x% of the 35 female students are in the honors program. If 15 male students are in the honors program, what fraction of all the non-honors students are female?

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The Math Beast Challenge Problem of the Week – February 26th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

Identical blocks are stacked in rows to create a tower 24 rows tall. If the top row of the tower consists of four blocks, and each row below the top row consists of eight more blocks than the row directly above it, how many blocks are in the entire tower?

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Over 800,000 Take the GRE in 2011

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gre graph

Last week, an ETS news release gave us some statistics on the 2011 administrations of the GRE. The big news was the huge increase over previous years in the number of test takers. ETS reports a roughly 13% increase in test takers over 2010 bringing the 2011 total to more than 800,000 tests “ an all-time record. Even considering the steady growth in the number GRE test takers over the past decade, this year stands out as a significant jump. Here is a chart of approximate GRE test takers for the past 9 years.

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The Math Beast Challenge Problem of the Week – February 13th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

dots

The regular 3 by 3 grid of dots above consists of evenly spaced rows and columns, in which the rows are perpendicular to the columns. How many different ways can a line segment be drawn from one dot in the grid to another, without intersecting any other dot?

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The Math Beast Challenge Problem of the Week – February 6th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

x, y, and z are three consecutive multiples of 3 such that x < y < z.

Quantity A Quantity B
The remainder when the sum of x + 1, y “ 2, and z + 3 is divided by 9
2

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The Math Beast Challenge Problem of the Week – January 16th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

Quantity A Quantity B
x + 5 (x “ 2)2

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The Math Beast Challenge Problem of the Week – January 9th, 2012

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Math BeastEach week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

Per Serving of: Calories Cost
Snack A 200 $1.70
Snack B 350 $0.60

Choosing from the snacks in the table above, a group consumes 3250 calories of snacks that cost a total of $11.

Quantity A Quantity B
The number of servings of Snack A the group consumed 4

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Friday Links

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Here is what happened in the world of the GRE this week…

Have a great weekend, everybody!