Tuesday, May 06, 2008

Dutch elm disease combat plan chances of success

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Dutch elm disease, which is caused by the fungus C. ulmi spread by adult scolytid beetles, has already destroyed 70 percent of the elms in t...
97 comments:

Dutch elm disease combat plan weakness

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Dutch elm disease, which is caused by the fungus C. ulmi spread by adult scolytid beetles, has already destroyed 70 percent of the elms in t...
5 comments:
Tuesday, April 15, 2008

Workshop de Matemática, Liderança e Realização Pessoal - GMAT

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(announcement in portuguese - non-speakers please apologise) Na próxima 5ª-feira, pelas 21h00, na localização indicada a seguir, convidamo-...
Friday, March 28, 2008

living 150 miles apart

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Bryan and Kathleen live 150 miles apart. They each drive towards the other's house along a straight road connecting the two. Bryan drive...
3 comments:
Tuesday, January 29, 2008

Grainco shares' rise paradox

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In the United States profits sales of Grainco's biggest selling product, cornflakes, have dropped by 30 percent over the last 3 years. D...
2 comments:

binomial factors

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(2^2 - 1)( 2^2 + 1)( 2^4 + 1)(2^8 + 1) A. 2^16 - 1 B. 2^16 + 1 C. 2^32 - 1 D. 2^128 - 1 E. 2^16.(2^16 - 1)
1 comment:

fund amount

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In a certain fund, 40 percent of the money is invested in stocks, and of that portion, 20 percent is invested in preferred stocks. If the fu...
5 comments:

nested subtraction

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1-(1/2 - 2/3)= A. 6/5 B. 7/6 C. 6/7 D. 5/6 E. 0
1 comment:
Monday, January 14, 2008

employees in the sales dept.

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Of the 60 emplyees of a certains company, twice as many are in the sales department as are in all of the other departments combined. What is...
1 comment:

percent of 600

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If 70 percent of 600 is 40 percent of x, then x = A. 105 B. 168 C. 342 6/7 D. 660 E. 1,050
1 comment:

work payment

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Maria works 4 days per week and earns d dollars per day. Which of the following represents the amount Maria earns at this job in w weeks? A...
1 comment:
Friday, December 21, 2007

PS - printing throughput

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If it takes 6 identical printing presses 4 hours to print 5000 newspapers, how long would it take to print 3 of these presses to print 3000 ...
1 comment:

PS - Length of a segment

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In the diagram above, BD = 8, AB = 6 and ED=5? What is the length of AE? ( Note : figure not drawn to scale.) A. 3 B. 4 C. 5 D. 7 E. 10 sou...
2 comments:
Thursday, December 20, 2007

PS - Microchip price

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The price of a microchip declines 67 percent every 6 months. At this rate, approximately how many years will it take for the price of an $81...
1 comment:
Friday, November 30, 2007

EC - Dr Wade's argument

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If Dr. Wade was right, any apparent connection of the eating of highly processe foods and excelling at sports is purely coincidental. A. If...
3 comments:

EC - soviet missiles attack

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In the mid-1960's a newly installed radar warning system mistook the rising of the moon as a massive missile attack by the soviets . A. ...
1 comment:

EC - land values increase

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Last year, land values in most part of the pinelands rose almost so fast, and in some parts even faster than what they did outside the pine...
1 comment:
Wednesday, November 28, 2007

PS - Sarah's coins

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Sarah receives 10z coins in addition to what she already has. She then has 5y+1 times as many coins as she had originally. In terms of y and...
1 comment:
Tuesday, November 27, 2007

PS - fish tank

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A fish tank is half full of water. If 10 gallons were added, the tank would be 7/8 full. What is the capacity of the tank (in gallons)? A. ...
7 comments:
Wednesday, November 14, 2007

DS - first order equation

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Does 8x = 16 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is greater than or equal to 6. A. Statement (1) ALONE is sufficient, but s...
2 comments: