Search found 266 matches
side of the square = sqroot 784 = 28 3 cows tethered at 3 corners of the circle make 3 parts of the entire circle with diameter of 28 or radius of 14 area of the square tethered by 3 cows = 3(pi*r^2)/4 = [3*(22)*14^2]/(7*4) = 3*11*14 = 462 area not accessed by any of the cows = area of square - 462 ...
- by Morgoth
Sat Aug 15, 2009 11:45 am- Forum: Problem Solving
- Topic: Geometry sum 2
- Replies: 6
- Views: 1552
Re: gmat prep
next term = 30/2= 15
next term = 15/2
next term = 15/4
next term = 15/8
next term = 15/16, at this point you should stop, we need a value greater than 1, clearly 15/16 cannot be greater than 1
hence answer is 15/8.
Hope this helps.
- by Morgoth
Sat Aug 15, 2009 11:30 am- Forum: Problem Solving
- Topic: gmat prep
- Replies: 2
- Views: 1264
Remember the following by heart: 3-4-5 5-12-13 The above examples are known as pythagorean triplets. These are most common examples of triplets tested on GMAT. if you look at the figure now, you can easily know that the other 2 sides will be 5, since one angle is 55, the other unknown angle will als...
- by Morgoth
Sat Aug 15, 2009 11:25 am- Forum: Problem Solving
- Topic: geometry-missing angles
- Replies: 3
- Views: 1614
This is the question of circular permutations therefore the formula is (n-1)! For example, if you want to arrange 5 people in a circular table, how many ways can you do that? Since we are dealing with circular position, you fix 1 person, which can be done in 1 way. Now arrange 4 people in the circle...
- by Morgoth
Sat Aug 15, 2009 11:18 am- Forum: Problem Solving
- Topic: combination
- Replies: 4
- Views: 1367
I agree answer should be D
question is must be true, hence x could be any positive or negative value and z could be any value greater than 1
In I the question is assuming x=z, which is not stated anywhere in the question.
what is the source?
- by Morgoth
Sat Aug 15, 2009 11:07 am- Forum: Problem Solving
- Topic: Operation
- Replies: 3
- Views: 1151
answer should be C.
minimum no. of selections that we get is 10 as explained by above posters. therefore, answer is no, the minimum no. of selections cannot be less than 10. Hence the statements are sufficient.
- by Morgoth
Tue Jul 28, 2009 9:31 am- Forum: Data Sufficiency
- Topic: DS-game
- Replies: 5
- Views: 1778
The question says m and n are two digit NUMBERS not INTEGERS
m = 22.43, 33.45, 88.98, etc
why are you guys assuming m and n to be an integer.
Hence, answer should be E.
- by Morgoth
Tue Jul 21, 2009 4:50 am- Forum: Data Sufficiency
- Topic: m-n = 11X, is X an integer
- Replies: 5
- Views: 4392
mean = 21
1 SD below from mean = 21 - 1*6 = 15
2 SD below from mean = 21 - 2*6 = 9
numbers of hours Pat watched television between 15 and 9
Hence D can be the only answer i.e 12.
Hope this helps.
- by Morgoth
Sun Jul 19, 2009 11:00 am- Forum: Problem Solving
- Topic: Standard Deviation problem
- Replies: 4
- Views: 1492
Re: Sum of positive integers x and y is 72
probably the qn may be : Product of positive integers x and y is 72. What is x+y? a. x = y + 1 b. x and y have same tens digit then try. If you consider this question. The statement I will be sufficient. Positive integers, x=y+1, consecutive integers. xy=72 only option is 8*9 Sufficient. Statement ...
- by Morgoth
Sat Jul 18, 2009 5:13 am- Forum: Data Sufficiency
- Topic: Sum of positive integers x and y is 72
- Replies: 8
- Views: 9113
Re: Inuit people
Until recently, the Inuit people led a nomadic existence, sheltering in igloos, the ice-block domes that are peculiar to north-central Canada, and in structures made of stones, bones, driftwood, and skins. A. Until recently, the Inuit people led a nomadic existence, sheltering B. During recent time...
- by Morgoth
Thu Jul 16, 2009 7:17 pm- Forum: Sentence Correction
- Topic: Inuit people
- Replies: 17
- Views: 10157
Re: Sum of positive integers x and y is 72
Sum of positive integers x and y is 72. What is xy? a. x = y + 1 b. x and y have same tens digit OA is D , whereas I feel it should be A . Consider II statement, (X,Y) / (Y,X) can be (33,39) (34,38) (35,37) (36,36) So how can we deduce a definite answer? We have 4 different values of X and Y. Pleas...
- by Morgoth
Thu Jul 16, 2009 10:36 am- Forum: Data Sufficiency
- Topic: Sum of positive integers x and y is 72
- Replies: 8
- Views: 9113
- by Morgoth
Wed Jul 15, 2009 12:31 pm- Forum: Lounge
- Topic: FREE Live Online GMAT Math Session
- Replies: 11
- Views: 4757
You can find the total taxes Mr. Jacob paid in 2007, but you cannot find what is the percentage of taxes that he paid out of his total income, because you don't know the total taxable income for 2007. taxes paid in 2006 = 4.8% of 42500 = 2040 taxes paid in 2007 = 2040 + 232 = 2272 percent of Jacob's...
- by Morgoth
Wed Jul 15, 2009 11:20 am- Forum: Problem Solving
- Topic: Gmatfocus
- Replies: 2
- Views: 1622
Re: Triangles
In isoceles triangle RST what is the measure of angle R? (1) The measure of angle T is 100deg. (2) The measure of angle S is 40 deg. Whats the logic behind this? I though both worked out alone sufficiently... Statement I if angle T is 100 the other 2 angles are equal since the triangle is an isosce...
- by Morgoth
Wed Jul 15, 2009 11:14 am- Forum: Problem Solving
- Topic: Triangles
- Replies: 2
- Views: 1373
Re: What is this?
Alright, this question is just confusing... Any ideas? For all positive integers m, [m]=3m when m is odd, and [m]=(1/2)m when m is even. Which of the following is equivalent to [9]x[6]? a) [81] b) [54] c) [36] d) [27] e) [18] it simply says when m is odd that is 9 use [m] = 3m = [9] = 3*9 = 27 when...
- by Morgoth
Wed Jul 15, 2009 11:08 am- Forum: Problem Solving
- Topic: What is this?
- Replies: 4
- Views: 1405