Search found 23 matches
Number System
The sum of the first N natural numbers is given by N(N+1)/2. What is the sum of the first N/2 even natural numbers if N is even?
A. N(N-2)/4
B. N(N-1)/4
C. N^2/4
D. N(N+1)/4
E. N(N+2)/4
Would like to know the methodology. OA is E
- by CaptainHaddock
Mon Oct 31, 2011 10:28 am- Forum: Problem Solving
- Topic: Number System
- Replies: 2
- Views: 1043
Number System
P and N are natural numbers. If P^N has the same unit's digit as P, how many possibilities exist for the unit's digit of P?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
Would like to know the methodology. OA is D
- by CaptainHaddock
Mon Oct 31, 2011 10:25 am- Forum: Problem Solving
- Topic: Number System
- Replies: 3
- Views: 1394
- by CaptainHaddock
Sat Oct 29, 2011 7:24 am- Forum: Sentence Correction
- Topic: Unimedco
- Replies: 13
- Views: 2071
B seems to be the best pick, though I must confess, I am not entirely convinced that B is structured right.
- by CaptainHaddock
Sat Oct 29, 2011 7:15 am- Forum: Sentence Correction
- Topic: Calculus
- Replies: 10
- Views: 2141
One is generally going to be confused between C & D. I opted for D initially, but a closer look at the sentence structuring in D gave it away. The catch here is to understand the meaning and thereby the difference in the following: 1. how to synthesize the growth hormone 2. to make a synthetic g...
- by CaptainHaddock
Sat Oct 29, 2011 6:56 am- Forum: Sentence Correction
- Topic: Harmone
- Replies: 9
- Views: 1985
- by CaptainHaddock
Sat Oct 29, 2011 6:43 am- Forum: Sentence Correction
- Topic: Diamond
- Replies: 10
- Views: 1676
My earlier post got me thinking. What should be the correct sentence here? -
'None of the answer choices are fully correct.'
Is none to be used in the singular form or the plural form?
I have used plural here, and it seems the right choice.... till an expert clarifies, that is. 
- by CaptainHaddock
Fri Oct 28, 2011 7:05 pm- Forum: Sentence Correction
- Topic: Student election
- Replies: 25
- Views: 3630
None of the answer choices are fully correct. Parallelism missing in E,too, which seems the closest bet.
- by CaptainHaddock
Fri Oct 28, 2011 6:54 pm- Forum: Sentence Correction
- Topic: Student election
- Replies: 25
- Views: 3630
- by CaptainHaddock
Fri Oct 28, 2011 4:56 pm- Forum: Sentence Correction
- Topic: SC Practice question #47
- Replies: 21
- Views: 3198
- by CaptainHaddock
Fri Oct 28, 2011 4:34 am- Forum: Sentence Correction
- Topic: SC Practice question #47
- Replies: 21
- Views: 3198
- by CaptainHaddock
Fri Oct 28, 2011 4:30 am- Forum: Sentence Correction
- Topic: A study of food resources in the North Pacific
- Replies: 10
- Views: 4486
- by CaptainHaddock
Fri Oct 28, 2011 4:29 am- Forum: Sentence Correction
- Topic: Agatha Christie
- Replies: 14
- Views: 2455
- by CaptainHaddock
Fri Oct 28, 2011 3:58 am- Forum: Sentence Correction
- Topic: Use of among
- Replies: 15
- Views: 3442
A, B, E eliminated because "in which" is a pre-requisite for this statement. C gets eliminated as 'was' is not directly referring to anything here. So, IMO 'D'.
- by CaptainHaddock
Fri Oct 28, 2011 3:55 am- Forum: Sentence Correction
- Topic: Ruins of harappa..
- Replies: 16
- Views: 3403
I got D. But then, that was when I did not look up the exact meaning of stymieing.
I guess, that word is the 'catch' in this question.
- by CaptainHaddock
Fri Oct 28, 2011 3:47 am- Forum: Sentence Correction
- Topic: Monster SC from Mgmat
- Replies: 12
- Views: 4178