Search found 11 matches
- by TimeforGMAT
Mon Jun 25, 2012 12:46 pm- Forum: Data Sufficiency
- Topic: The number properties
- Replies: 6
- Views: 1227
Dear Anurag,
I think IMO is A.
Sum of K consecutive integers (K*(K+1)/2) is always divisible by K regardless of K being even or odd.
So we cannot say if K^2 is even or odd.
And, sum of even number of consecutive integers is not always odd (1 + 2 + 3 + 4 = 10)
What am I missing?
- by TimeforGMAT
Mon Jun 25, 2012 11:32 am- Forum: Data Sufficiency
- Topic: The number properties
- Replies: 6
- Views: 1227
Dear Anurag,
Can you please explain again how B is sufficient by itself?
Sum of 3(odd) consecutive numbers 1 2 3 is 6 (even) and sum of 2(even) consecutive 1 2 is 3 (odd).
Thank you
Pranith.
- by TimeforGMAT
Mon Jun 25, 2012 10:51 am- Forum: Data Sufficiency
- Topic: The number properties
- Replies: 6
- Views: 1227
Hello Guru's:
Shouldn't the question clearly say that all Managers have same salary and so does all Directors? If this was a real GMAT question, would this additional statement be mentioned?
Thanks.
- by TimeforGMAT
Thu Sep 29, 2011 6:08 pm- Forum: Data Sufficiency
- Topic: Avg Salary and employees
- Replies: 13
- Views: 8540
Answer is B . Fourth term can be negative only when first two terms are: Case 1:Both negative Case 2:First is -ve and second is +ve. Lets expand case 1 scenario: (N=-ve, P=+) N,N,P,N,N,P,N,N,P...You can see that there are two negatives for every three numbers. This means you will have a total of 16 ...
- by TimeforGMAT
Mon Sep 26, 2011 12:09 pm- Forum: Data Sufficiency
- Topic: Sequences
- Replies: 6
- Views: 1351
Set X consists of 9 positive elements. Set Y consists of the squares of the elements of X. Is the average of the elements in Y greater than that of set X? (1) The median of X is greater than 1. (2) The range of X is 2. my answer is B dunno why its E The answer ought to be B - who is saying that it'...
- by TimeforGMAT
Thu Sep 15, 2011 10:09 am- Forum: Data Sufficiency
- Topic: a data from gmat forum
- Replies: 5
- Views: 1522
Define A = the sum of digits of the number 7^100 and B = sum of digits of A. What is the sum of digits of B? A) 7 B) 16 C) 10 D) 11 E) Cannot be Determined OA - A Extremely ambiguous though brilliant question seen after a long time. There is difference in the two phrases, sum of digits and ultimate...
- by TimeforGMAT
Thu Sep 09, 2010 9:37 am- Forum: Problem Solving
- Topic: Number Theory...7^100
- Replies: 6
- Views: 1633
Define A = the sum of digits of the number 7^100 and B = sum of digits of A. What is the sum of digits of B? A) 7 B) 16 C) 10 D) 11 E) Cannot be Determined OA - A Extremely ambiguous though brilliant question seen after a long time. There is difference in the two phrases, sum of digits and ultimate...
- by TimeforGMAT
Thu Sep 09, 2010 4:31 am- Forum: Problem Solving
- Topic: Number Theory...7^100
- Replies: 6
- Views: 1633
- by TimeforGMAT
Thu Sep 09, 2010 4:00 am- Forum: Problem Solving
- Topic: how to transfer the solution of one problem to another
- Replies: 3
- Views: 1091
Define A = the sum of digits of the number 7^100 and B = sum of digits of A. What is the sum of digits of B? A) 7 B) 16 C) 10 D) 11 E) Cannot be Determined OA - A Good Q. I am not sure if there is a easier way to do this but this is how I came up with A Number Sum of Digits Sum(Sum of Digits) 7^1=7...
- by TimeforGMAT
Wed Sep 08, 2010 2:44 pm- Forum: Problem Solving
- Topic: Number Theory...7^100
- Replies: 6
- Views: 1633
I think it's A. Conclusion is a total blockade to Patria's ports is neccessary but such action would likely cause Int'l discord. A states balance of opinion is likely to favor Patria in the event of a blockade which basically states they would be against the blockade (Int'l discord) as this would n...
- by TimeforGMAT
Wed Sep 01, 2010 5:48 am- Forum: Critical Reasoning
- Topic: Trade Embargo
- Replies: 9
- Views: 2146