Search found 10 matches
IMO A In such questions, because the questions implies that the remained will be same for all n , just substitute n = 1. We get (13^6 + 8)/10 We can find out what 13's unit digit will be finding a pattern. 13^1=13 13^2=169 13^3=___7 13^4=____1 13^5=_____3 Hence ^6 will have a units digit of 9 so __...
- by melifox
Sat Apr 24, 2010 9:52 pm- Forum: Problem Solving
- Topic: Remainders - Please help!
- Replies: 4
- Views: 1404
Remainders - Please help!
If k is a positive integer, what is the remainder when 13^(4k+2) + 8 is divided by 10? (A) 7 (B) 4 (C) 2 (D) 1 (E) 0 Don't have an OA. This is way to complicated for me or maybe I'm missing something. The fact that 13 is prime should mean something? Can't figure out how to make 13^(4k+2) a multiple ...
- by melifox
Sat Apr 24, 2010 9:03 pm- Forum: Problem Solving
- Topic: Remainders - Please help!
- Replies: 4
- Views: 1404
this question is in GMATPREP and the OA is E please check your sources before posting.... I have a booklet in my hands that states that OA is A. Please do not assume that we are being careless. In my case this is my only reference and I guess I have to trust it and so do all the people posting here...
- by melifox
Thu Mar 11, 2010 7:37 pm- Forum: Sentence Correction
- Topic: Mexican agrarian revolution
- Replies: 15
- Views: 8347
Wind Resistance... HELP!!!
Wind resistance created by opening windows while driving results in a fuel penalty as great or greater than is incurred by using air conditioning . A. as great or greater than is incurred by using air conditioning B. that is as great or greater than is incurred using air conditioning C. as great as ...
- by melifox
Thu Mar 11, 2010 7:18 pm- Forum: Sentence Correction
- Topic: Wind Resistance... HELP!!!
- Replies: 45
- Views: 23658
why 4 is B??? someone explain me plis..... Pay attention to this excerpt: Although scales typically cover reptiles, the pterosaurs probably had hairy coats. T. H. Huxley reasoned that flying vertebrates must have been warm-blooded because flying implies a high rate of metabolism, which in turn impl...
- by melifox
Mon Mar 01, 2010 4:48 pm- Forum: Reading Comprehension
- Topic: The Pterosaurs
- Replies: 17
- Views: 5454
I got 1)D 2)B 3)B 4)B 5)A 6) B 7) D It took me almost 10 mins while doing in it office... Why is N1 D? I first thought that D was the correct answer too, but if these things were covered by hair and were warm blooded, how can they be reptiles? Ughhh I don't know anything about nature! That's why i ...
- by melifox
Sun Feb 28, 2010 7:00 pm- Forum: Reading Comprehension
- Topic: The Pterosaurs
- Replies: 17
- Views: 5454
I'm not a native English speaker, so I don't really understand the expression "soft hand". Could you please explain? To me, "a piece of the action" ("resistance to profound change") would be something like a populist measure: it will keep the masses happy for a while bu...
- by melifox
Sun Feb 28, 2010 4:38 pm- Forum: Reading Comprehension
- Topic: 1000 RC Passage 2 Q 3&6
- Replies: 16
- Views: 20934
I think it refers to the non-stop race-like system that the American model proposes. Glorifies change itself as the way to go, without acknowledging achievements of any kind or those who work towards those achievements (clerks as an example). Almost like running on a trademill, there's no really and...
- by melifox
Sun Feb 28, 2010 4:24 pm- Forum: Reading Comprehension
- Topic: Doubt on Woodrow Wilson passage - 1000 Series RC passage 2
- Replies: 2
- Views: 2257
- by melifox
Sat Feb 27, 2010 7:59 pm- Forum: Data Sufficiency
- Topic: Product of lenghts (inside a triangle)
- Replies: 2
- Views: 1014
Product of lenghts (inside a triangle)
There might be some sort of property that obviously I am not aware of... please help!!! In the figure above, what is the product of the lenghts af AD and BC? (1) The product of the lenghts of AC and BE is 60 (2) The lenght of BC is 8 (see the figure in the attached doc) This is driving me insane!!!!...
- by melifox
Sat Feb 27, 2010 7:08 pm- Forum: Data Sufficiency
- Topic: Product of lenghts (inside a triangle)
- Replies: 2
- Views: 1014