Hi The question is from the topic geometry. How many diagonals does a 63-sided convex polygon have? A. 3780 B. 1890 C. 3843 D. 3906 E. 1953 You...
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Oct 15, 2009 7:37 am
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I think it should be 3906, as to find diagonals for this it will be 63*62 which comes out to be 3906.Please explain if my approach and answer is wrong. ...
gaurav sharma
sharmagaurav.84@...
Oct 16, 2009 6:07 am
1623
Solution: Let’s see this,  Sides               #of diagonals Triangle (3)                  0 Square (4)...
The number of diagonals is just the numbers of segments linking two vertex so C(63,2)=63*62/2=1953 (E) 2009/10/15 4GMAT - GMAT Classes, Discussion Forums...
Let us start answering this by taking an example. Consider a square ABCD. From A, only one diagonal can be drawn - AC. From B, only one diagonal can be drawn -...
To calculate diagonals of an n-sided polygon, use the formula n(n-3)/2. In this case the number of sideds of the polygon is 63. No of diagonals = 63(63 - 3) /...
Ok. I want to finish the controverse about what we mean by diagonals. In my post I wrote that a diagonal is just any segment line unifying two vertex of a...
Hi Sharmin, 1. The reason why A is wrong is because 'it' does not refer to anything. The 'they' in option B clearly refers back to some Americans. 2. The...
plz someone help me with these two questions. A recent survey of all auto accident victims in Dole County found that, of the severely injured drivers and...
The answer to the first question is B. 80% of drivers severely injured while using no seatbelt is a lot ONLY if less than 80% of drivers do NOT wear a ...
Hi guys, Please help me out with this DS questions. 1. Are X and Y both positive? Statement 1: 2x - 2y = 1 Statement 2: x/y > 1 Answer is C. 2. Does the line k...
mahesh Kumaran K
kmaheshkumaran@...
Nov 5, 2009 9:49 am
1632
Hi, I would go with 1) D and 2) D. My explanation behind 1) D is if more than half of the drivers are front-seat passengers in the survey were wearing seat...
Guys, I solved this problem but I don't have the answer to verify. What do you'll think... At a college party, 70% of the women are wearing red t-shirts. If...
Guys what do you think? If 20% of the people at a college party were men who were wearing red t-shirts, and 60% of the men at the party were not wearing redt...
The answers are "D" for both questions. Â In the first stimulus we have that OF THOSE SEVERELY INJURED 80% did not wear seat belts. In order to conclude that...
Hi The given question is a Data Sufficiency question on divisibility and properties of Prime Numbers Question When Y is divided by 2, is the remainder 1? 1....
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Nov 6, 2009 2:35 pm
1637
Hi all,I am planning to take GMAT exam (or rather give it a try). I have no idea where/how to get free material for prep. I would prefer soft copies. Can any...
Answer is E.  (1) tells us that y has to be odd, either negative or positive  Formula for the remainders: y=2m+-R    y = -1, y= 2*(0) -1,  R=-1 ...
Answer is definitely A. The number of women wearing red t-shirts: 0.7*w Number of people (men and women) wearing red t-shirts: 0.6*(w+m) With statement1: ...
the answer would be A. consider option 2: the digit 2 is also a prime no and the remainder in that case wouldnt be 1. so we don't get an exact single answer. ...
Following is my answer to the question... Statement 1 alone is sufficient and so A should be the answer... Question is asking us to determine if Y is an odd...
Hi The correct answer is A. Detailed explanation is at http://questionbank.4gmat.com/mba_prep_sample_questions/data_sufficiency/number_theory_GMAT_DS.shtml ...
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Nov 14, 2009 6:42 am
1644
I have only one thing to comment. It is that if we were told that y were greater than 2, statement 2 would be sufficient too and the answer would be D as the...
Just another thing to keep neurons running.The problem must state that y is an integer for if not (-1)^(y+1) yield more solutions that are not integers. For...
Dear all, If my understanding is correct, one needs to be able to find a *unique* value for Y. With 1, we could find that Y should be odd, which means Y could...
- The answer should be 50%. Assume 100 people attended the party. 20% of the people at a college party were men who were wearing red t-shirts means that 20 out...
Hi, I would go with (C) & (D). 1. (C) --> Since mainly the front-seat passengers & drivers got injured than rear seat passengers, so it is necessary for them...
Its as follows: Begining qith the 2nd info we know that 60 percent of the men were not wearing red t-shirt, we conclude that 40% of the men were indeed wearing...
- The answer should be 50%. Assume 100 people attended the party. 20% of the people at a college party were men who were wearing red t-shirts means that 20 out...
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