Search found 31 matches
how about this?
largest angle will be less then 180.
Now there are 12 angles from 120 to 175 with difference of 5 degrees.
120
125
130
135
.
..
175
Therefore, 12 sides.
- by jackcrystal
Sat Feb 28, 2009 2:27 pm- Forum: Problem Solving
- Topic: Polygon is not possible
- Replies: 11
- Views: 2761
- by jackcrystal
Fri Feb 13, 2009 10:28 pm- Forum: Data Sufficiency
- Topic: value
- Replies: 7
- Views: 2231
- by jackcrystal
Sat Jan 24, 2009 8:35 am- Forum: I just Beat The GMAT!
- Topic: Miracles Do Happen
- Replies: 18
- Views: 8492
STMT I. if both max and min are (+) or (-), statement I holds. However, list with all negatives and odd numbers of elements will produce a negative value. List with all positives and odd numbers of elements will produce positive value. Hence (I) insufficient. Stmt II. if number of elements are even,...
- by jackcrystal
Mon Jan 12, 2009 2:01 pm- Forum: Data Sufficiency
- Topic: gmat prep
- Replies: 1
- Views: 1548
Guys official answer is : A
This question is from GmatPrep. Other guys probably got it from some other faulty sources.
- by jackcrystal
Wed Dec 10, 2008 8:52 am- Forum: Sentence Correction
- Topic: set q 39
- Replies: 9
- Views: 4468
ans for #3
(A)
Stmt I.
xyz =70. If you breakup 70 to prime factors, result is 2x5x7. This is it.
x+y+z = 2+5+7 = 14.
Stmt II.
10x = 7yz (this is valid for many different values of x, y and z). Not suff.
Ans. A
- by jackcrystal
Wed Dec 10, 2008 4:09 am- Forum: Data Sufficiency
- Topic: GMAT CD...HELP
- Replies: 4
- Views: 1842
- by jackcrystal
Tue Dec 09, 2008 12:13 am- Forum: Critical Reasoning
- Topic: Please post your opinion on the set of CR questions uploaded
- Replies: 1
- Views: 1322
Please read Ron's explanation and then my simple solution.
x = 180 - RSQ - TSU
= 180 -1/2(180-R) - 1/2(180-T)
= 1/2 R + 1/2 T
= 1/2(90)
= 45
(C)
- by jackcrystal
Fri Nov 28, 2008 5:26 pm- Forum: Problem Solving
- Topic: gmatprep - tough triangle problem
- Replies: 5
- Views: 4333
slope m = -(b/a) where b = y intercept and a = x intercept I. slope is 3 times y-intercept, 3b = -b/a a = -1/3 (basically it gives us x intercept value). can't find y-intercept with this value. No Suff II. x intercept = -1/3 we found this value before in I. this can't be used to find y intercept Not...
- by jackcrystal
Mon Nov 24, 2008 11:06 pm- Forum: Data Sufficiency
- Topic: Gmat Prep Geom - Reposting
- Replies: 2
- Views: 1272
y = -(a/b)x -c
=> 32 = -a/b
I. plug value foe a and get b.
Suff
II. C has nothing to do with slop
not suff.
Hence
A
- by jackcrystal
Mon Nov 24, 2008 2:03 pm- Forum: Data Sufficiency
- Topic: Question 4 (nov.24th)
- Replies: 4
- Views: 1563
all possible pairs = 800*1000
but we have only 60 pairs that are siblings
Therefore, probability = 60 / (800 * 1000) = 3/40000
- by jackcrystal
Sun Nov 23, 2008 8:14 am- Forum: Problem Solving
- Topic: OG Question 217 -> Please explain
- Replies: 6
- Views: 1977
- by jackcrystal
Thu Nov 20, 2008 7:41 pm- Forum: Problem Solving
- Topic: GMAT Probabiliity
- Replies: 11
- Views: 1979
- by jackcrystal
Thu Nov 20, 2008 7:19 pm- Forum: Data Sufficiency
- Topic: GMATPrep question on DS - average
- Replies: 4
- Views: 1368
- by jackcrystal
Thu Nov 20, 2008 5:46 am- Forum: Data Sufficiency
- Topic: Prep 12
- Replies: 1
- Views: 1135
- by jackcrystal
Thu Nov 20, 2008 5:39 am- Forum: Data Sufficiency
- Topic: Prep 13
- Replies: 10
- Views: 2011