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Please note that dividing one block '121212' by 9 you get 13468 (sum of digits 22) and if you divide two blocks of '121212' by 9 you get almost the same: 13468 0 13468 (sum of digits 2*22) ... "therefore" 50 blocks '121212' (N) divided by 9 will have the following "structure": 1...
- by goyalsau
Mon Dec 27, 2010 9:32 am- Forum: Problem Solving
- Topic: N = 121212
- Replies: 9
- Views: 5203
N = 121212
I know this question is not from the Gmat syllabus , But just wondering How to solve this one.
Let N = 121212 �� upto 300 digits. What is the remainder when N is divided by 999?
12
121
216
666
- by goyalsau
Mon Dec 27, 2010 3:22 am- Forum: Problem Solving
- Topic: N = 121212
- Replies: 9
- Views: 5203
Thanks goyalsau for above explanation. But according to Princeton the OA is D Also I have difficulty in understanding x & y above. You have assumed that "Coders are X & System Administrators are Y". But then while doing calculations for statement 1, you should shift two coders to ...
- by goyalsau
Sun Dec 26, 2010 11:09 pm- Forum: Data Sufficiency
- Topic: Princeton--ration drill --salaries of an IT department
- Replies: 9
- Views: 1607
A certain IT department of fewer than 15 people hires coders & system administrators.Coders are paid $ 55,000 per year on average ,while system administrators are paid an average yearly salary of $45,000.What is the ratio of coders to system administrators? 1) If two if the coders were made sys...
- by goyalsau
Sun Dec 26, 2010 9:40 am- Forum: Data Sufficiency
- Topic: Princeton--ration drill --salaries of an IT department
- Replies: 9
- Views: 1607
- by goyalsau
Sun Dec 26, 2010 7:41 am- Forum: Problem Solving
- Topic: Combined Work.
- Replies: 6
- Views: 1965
hi goyalsau.. all 4 were very nice problems may I know the source? @ Anshu....Thanks Anshu , Great Work, I must say you stick to the basics and that is very important. Specially in that Circle and Fruit Dear problem, After all the search about Gmat , It is said that its very rare that somebody scor...
- by goyalsau
Sun Dec 26, 2010 6:56 am- Forum: Problem Solving
- Topic: polygon, Point A and B , Circles & Fruit Dealer
- Replies: 13
- Views: 1982
1) To know the total interior angles of any polygon, use this formula: (n-2) * 180, where n is the number of polygon sides So in this case: (n-2) * 180 = 150 n 180n - 360 = 150n n= 12 A dodecagaon is a polygon with 12 sides. Thanks N'Dure, I posted this problem for just one simple reason. I already...
- by goyalsau
Sat Dec 25, 2010 9:26 am- Forum: Problem Solving
- Topic: polygon, Point A and B , Circles & Fruit Dealer
- Replies: 13
- Views: 1982
How many sides does a regular polygon have? (1) The sum of its exterior angles = 360 degrees (2) Statement 1: The sum of its exterior angles = 360 degrees Sum of all the exterior angles of any regular polygon is 360° . Thus this doesn't provide any new information. Not sufficient. Statement 2: The...
- by goyalsau
Sat Dec 25, 2010 9:19 am- Forum: Data Sufficiency
- Topic: X , Polygon & 12 meters
- Replies: 5
- Views: 3105
polygon, Point A and B , Circles & Fruit Dealer
If each interior angle of a regular polygon is 150 degrees, then it is Octagon Decagon Quadrilateral Dodecagon Tetrahedron A man starts from point A and walks northwards at the speed of 6 km/hr. He then turns right and walks eastwards at the speed of 4 km/hr, turns right again and walks southwards a...
- by goyalsau
Sat Dec 25, 2010 5:11 am- Forum: Problem Solving
- Topic: polygon, Point A and B , Circles & Fruit Dealer
- Replies: 13
- Views: 1982
X , Polygon & 12 meters
What is the value of x? (1) x/y = 4 (2) xy = 4 How many sides does a regular polygon have? (1) The sum of its exterior angles = 360degrees (2) The total sum of all the interior and exterior angles = 1,800degrees If a rope is cut into three pieces of unequal length, what is the length of the shortest...
- by goyalsau
Sat Dec 25, 2010 5:08 am- Forum: Data Sufficiency
- Topic: X , Polygon & 12 meters
- Replies: 5
- Views: 3105
The time taken by P to complete a piece of work is four times the time taken by Q. Q takes four times the time taken by R and R takes four times the time taken by S. When these four persons are divided into 2 pairs, the ratio of the times taken by the two pairs is 13 : 4. Find the pair, which takes...
- by goyalsau
Sat Dec 25, 2010 1:35 am- Forum: Problem Solving
- Topic: Combined Work.
- Replies: 6
- Views: 1965
Combined Work.
The time taken by P to complete a piece of work is four times the time taken by Q. Q takes four times the time taken by R and R takes four times the time taken by S. When these four persons are divided into 2 pairs, the ratio of the times taken by the two pairs is 13 : 4. Find the pair, which takes ...
- by goyalsau
Fri Dec 24, 2010 11:54 pm- Forum: Problem Solving
- Topic: Combined Work.
- Replies: 6
- Views: 1965
IMO The answer is A I Since both triangles have the same angles, they are similar. If ABC has 4 times the area of KLM, each side of ABC is twice the size of KLM. So the hyp of ABC = 2*10 = 20 So I is sufficient II Knowing one side and the hypt I can get the area of KLM sqrt(10^2-6^2) = 8. Thus, I c...
- by goyalsau
Fri Dec 24, 2010 3:03 am- Forum: Data Sufficiency
- Topic: whats the answer of this one and why
- Replies: 37
- Views: 22703
Great work guys, Beat_gmat_09, Has shown a very good point. Anshu Has given a very good explanation. I just wan't to ask one thing.? If x > z & p > q then we can add the inequality and subtract , Irrespective of there signs. We can do x + p > z + q & x - p > z - q or p - x > q - z we can not...
- by goyalsau
Thu Dec 23, 2010 8:52 pm- Forum: Data Sufficiency
- Topic: x,y and z
- Replies: 4
- Views: 1310
Unfortunately, that's not the correct answer. HI! Archit, Different kind of a question, Its very rare that anshu got this one wrong.... after all the post that i have seen of him, According to me, Answer should be 32.5% There 25% of Hail & 10% chance of rain. So 25 + 10 = 35 % 100 - 35 = 65 % c...
- by goyalsau
Thu Dec 23, 2010 5:48 pm- Forum: Problem Solving
- Topic: Squash- weather inclement
- Replies: 5
- Views: 1184