Search found 48 matches
Manhattan_ Is the postive integer x odd
Is the positive integer x odd?
(1) x = y^2 + 4y +6
(2) x = 9z^2 + 7z - 10
please explain, thank
OA : B
Source: Manhattan challenge problem
- by nh8404052006
Sat May 02, 2009 11:37 pm- Forum: Data Sufficiency
- Topic: Manhattan_ Is the postive integer x odd
- Replies: 1
- Views: 976
paint jobs_manhanttam
A paint crew gets a rush order to paint 80 houses in a new development. They paint the first y houses at a rate of x houses per week. Realizing that they'll be late at this rate, they bring in some more painters and paint the rest of the houses at the rate of 1.25x houses per week. The total time it...
- by nh8404052006
Sat May 02, 2009 3:04 pm- Forum: Problem Solving
- Topic: paint jobs_manhanttam
- Replies: 1
- Views: 3230
From statement (2) ==>x = – 1 , but no info abt n ==> insufficient From statement (1) ==> n (x – 1 ) < 0 . If n = – 1 and x =2 , n (x – 1 ) < 0 but when n = 2 and x = 0 , then n (x – 1 ) < 0 ==> insufficient Both statements together ==>if x = ...
- by nh8404052006
Sat May 02, 2009 7:26 am- Forum: Problem Solving
- Topic: manhattan challenge problem_DS_is n < 1
- Replies: 4
- Views: 1390
manhattan challenge problem_DS_is n < 1
Is n < 1 ?
(1) nx – n < 0
(2) x–1 = –2
OA: C
Please explain, thank
Source: Manhattan challenge problem
- by nh8404052006
Sat May 02, 2009 6:32 am- Forum: Problem Solving
- Topic: manhattan challenge problem_DS_is n < 1
- Replies: 4
- Views: 1390
chicago rainy days
If the probability of rain on any given day in Chicago during the summer is 50%, independent of what happens on any other day, what is the probability of having exactly 3 rainy days from July 4 through July 8, inclusive? Please explain, thank OA : [spoiler]5/16[/spoiler] Source : Manhattan challenge...
- by nh8404052006
Sat May 02, 2009 6:04 am- Forum: Problem Solving
- Topic: chicago rainy days
- Replies: 2
- Views: 1492
share 5 donuts--Probability
Larry, Michael, and Doug have five donuts to share. If any one of the men can be given any whole number of donuts from 0 to 5, in how many different ways can the donuts be distributed?
Please explain, thank
OA: 21
Source : Gmat-maths.blocked
- by nh8404052006
Sat May 02, 2009 4:08 am- Forum: Problem Solving
- Topic: share 5 donuts--Probability
- Replies: 8
- Views: 2418
My attempt: From question stem: 20 ≥ 9N + 3 P ….... (1) From Statement (1) 20 ≥ 7N + 5 P ….... (2) From Statement (2) 20 ≥ 4N + 8 P …… (3) (1) + (2) + (3) ==> 60 ≥ 20N + 16 P … (4) (4) / 2 ==> 30 ≥ 10...
- by nh8404052006
Fri May 01, 2009 5:56 am- Forum: Data Sufficiency
- Topic: notebook and pencil-- inequality
- Replies: 16
- Views: 4707
notebook and pencil-- inequality
If 20 Swiss Francs is enough to buy 9 notebooks and 3 pencils, is 40 Swiss Francs enough to buy 12 notebooks and 12 pencils? (1) 20 Swiss Francs is enough to buy 7 notebooks and 5 pencils. (2) 20 Swiss Francs is enough to buy 4 notebooks and 8 pencils. OA : B Please explain, thank source: Gmat-maths...
- by nh8404052006
Fri May 01, 2009 1:45 am- Forum: Data Sufficiency
- Topic: notebook and pencil-- inequality
- Replies: 16
- Views: 4707
manhattan challenge problem -- terminating zeros
How many terminating zeroes does 200! have?
OA: 49
Please explain, thank
Source: Manhattan challenge problem
http://gmat-maths.blocked/search?u ... results=20
- by nh8404052006
Wed Apr 29, 2009 12:04 am- Forum: Problem Solving
- Topic: manhattan challenge problem -- terminating zeros
- Replies: 3
- Views: 2565
Bold face question: delta products _fossil fuel consumption
Delta products, Inc., has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity . The question has been raised whether it can be concluded that for a given level of output, Delta’s operation now causes less fossil fuel to b...
- by nh8404052006
Sun Apr 05, 2009 10:58 pm- Forum: Critical Reasoning
- Topic: Bold face question: delta products _fossil fuel consumption
- Replies: 26
- Views: 23991
shuttle and space station
Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity. A: the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fu...
- by nh8404052006
Sun Apr 05, 2009 10:14 pm- Forum: Sentence Correction
- Topic: shuttle and space station
- Replies: 12
- Views: 5457
Personally, I will go for D. The reason is that if the number of worker was more or less the same, but the number of hours that a worker work (per day) was reduced by half, then the number of production or the production per worker would be reduced, even with more or less the same number of workers....
- by nh8404052006
Fri Mar 20, 2009 5:09 pm- Forum: Critical Reasoning
- Topic: GMAT CR Assumption
- Replies: 20
- Views: 11547
Democrat vs Republic
During Roosevelt’s years in office Black Americans began voting for Democrats rather than Republicans in national elections, but Black support for Democrats at the state and local levels developed only after when civil rights legislation was supported by Harry Truman. (A) developed only af...
- by nh8404052006
Thu Jan 22, 2009 4:45 am- Forum: Sentence Correction
- Topic: Democrat vs Republic
- Replies: 2
- Views: 1730
Town Hall of Amsterdam
By the mid-seventeenth century, Amsterdam had built a new town hall so large that only St. Peter’s in Rome, the Escorial in Spain, and the Palazza Ducale in Venice could rival it for scale or magnificence. (A) could rival it for (B) were the rivals of it in their (C) were its rival as to (...
- by nh8404052006
Mon Jan 19, 2009 8:39 am- Forum: Sentence Correction
- Topic: Town Hall of Amsterdam
- Replies: 3
- Views: 5120
sowell argues
By showing that South Africa does not have a free market and is in fact a kind of collectivist welfare state for Whites only, Sowell argues that American conservatives have no valid ideological grounds to be in sympathy with the Pretoria regime. (A) to be in sympathy with (B) to sympathize with (C) ...
- by nh8404052006
Mon Jan 19, 2009 8:18 am- Forum: Sentence Correction
- Topic: sowell argues
- Replies: 4
- Views: 1661