Search found 103 matches
That is the the correct answer but it would be useful for the users if you could post the detailed work out:)
- by tanyajoseph
Thu Sep 20, 2007 1:41 am- Forum: Problem Solving
- Topic: GMAT paper test - decimal notation
- Replies: 6
- Views: 2276
Should be A. In a paralellogram opposite sides are parallel and equal. Say ABCD is a parallelogram where AB and CD are the bases and BC and CD the width. Height is determined by drawing a perpendicular line from vertex D to AB. This forms a 30-60-90 triangle. And so one angle can be calculated as a ...
- by tanyajoseph
Wed Sep 19, 2007 3:25 pm- Forum: Problem Solving
- Topic: Q31
- Replies: 3
- Views: 1952
- by tanyajoseph
Wed Sep 19, 2007 3:13 pm- Forum: Problem Solving
- Topic: Q37
- Replies: 3
- Views: 1836
GMAT Paper test - coordinate geo
In the xy plane, O is given as (0,0). P lies on the the coordinate(0,30) and Q on (50,0). Draw a line that connects P and Q. How many points on line segment PQ have coordinates that are both integers?
a) 5
b) 8
c) 10
d) 11
e) 20
- by tanyajoseph
Wed Sep 19, 2007 2:48 pm- Forum: Problem Solving
- Topic: GMAT Paper test - coordinate geo
- Replies: 1
- Views: 1531
GMAT paper test - decimal notation
What is the least no of digits (including repetitions) needed to express 10^100 in decimal notation?
a) 4
b) 100
c) 101
d) 1000
e) 1001
- by tanyajoseph
Wed Sep 19, 2007 2:43 pm- Forum: Problem Solving
- Topic: GMAT paper test - decimal notation
- Replies: 6
- Views: 2276
Gmat paper test - combined areas
In a certain animal population, for each of the first three months of life, the probability that an animal will die during that month is 1/10. For a group of 200 newborn members of the population, approximately how many would be expected to survive the first 3 months of life? a) 140 b) 146 c) 152 d)...
- by tanyajoseph
Wed Sep 19, 2007 2:41 pm- Forum: Problem Solving
- Topic: Gmat paper test - combined areas
- Replies: 3
- Views: 1563
Gmat paper test question - Ratio
A wildlife preserve is being planned for 3000 rhinoceroses. The preserve is to contain a total of 10,000 acres of watering area, plus 100 acres of grazing area for each rhinoceros. If the no of rhinoceros is expected to increase by 10 percent, how many thousand acres should the preserve have in orde...
- by tanyajoseph
Wed Sep 19, 2007 2:37 pm- Forum: Problem Solving
- Topic: Gmat paper test question - Ratio
- Replies: 2
- Views: 1702
Guys, I need help - Refer the qs below - Quote: The numbers in which of the following pairs do NOT have a pair of distinct prime divisors in common ? (A) 10 and 20 (B) 12 and 18 (C) 24 and 32 (D) 21 and 63 (E) 22 and 88 Hey first point is - I am not being able to get out the meaning of it. second po...
- by tanyajoseph
Wed Sep 19, 2007 2:31 pm- Forum: Problem Solving
- Topic: Section - 22 Question - 10
- Replies: 5
- Views: 2513
Can someone please elaborate on how to solve such problems?
I am not convinced with the explanation for 4 gallons as breaking up using the explanation gives 4 gallons of the mixture and not 2 as asked in the question.
Suppose there should be some way to solve this...thankx in advance
- by tanyajoseph
Mon Sep 17, 2007 12:10 pm- Forum: Problem Solving
- Topic: ps 500 test21 #18
- Replies: 10
- Views: 2179
"the length of the line segment" is the hypotenuse of the 45-45-90 triangle ... the legs of the right triqangle is 2 each so the hyp is root( 2^2+2^2) = 2sqrt(2).... How do you actually derive that to 2 as the value for the legs here??? Hypotenuse you could obtain from the two legs but how...
- by tanyajoseph
Mon Sep 17, 2007 10:22 am- Forum: Problem Solving
- Topic: ps test7 #18
- Replies: 5
- Views: 1831
I had the exact same reasoning ...but prep software rated me wrong for the question and gave the answer as B alone!!!
No further explanations as the question was from the GMAT PRep questionarre and so I bought it down to the forum 
- by tanyajoseph
Mon Sep 17, 2007 5:40 am- Forum: Data Sufficiency
- Topic: Remainder
- Replies: 4
- Views: 1739
That was pretty much all about the question and I double verified the question!
Had I come across this question anyplace than GMAT prep I would have questioned the credibility of the source. But no such options either as this was from GMAT PREP and this was ALL the information that the question had:-|
- by tanyajoseph
Mon Sep 17, 2007 3:43 am- Forum: Data Sufficiency
- Topic: Remainder
- Replies: 4
- Views: 1739
Area of rect = 1200 Area of Outer CIRCLE - 400pi Area of Inner CIRCLE - 100pi So area of semicircle excluding inner circle should be either (400pi-100pi)/2 or 400pi/2 - 100pi/2 which would both give 150 pi. So answer would be 1200 + 150 pi --->E Key: The catch is to calculate the area of semicircle ...
- by tanyajoseph
Fri Sep 14, 2007 5:23 am- Forum: Problem Solving
- Topic: Trignometry problem
- Replies: 5
- Views: 2283
The grid format would help you answer these questions. Total Red toys - 25 Total blue toys - 75 Total Size A toys - 50 Total SIze B toys - 50 Red Size A toys - 10 SO Blue Size B toys can be derived as below; Red Size A toys + Red Size B toys = 25 Substitute and u get the value of Red size B toys to ...
- by tanyajoseph
Fri Sep 14, 2007 5:17 am- Forum: Problem Solving
- Topic: Proportion and Percent Problem
- Replies: 5
- Views: 3265
With Q4:
Prob quotes 1/5 of the class are 4 yrs old or older.
So how do u actually derive 40-16 = 1/5???
Can you please ellaborate the explanation...missing smethin crazy!
Thank you
- by tanyajoseph
Thu Sep 13, 2007 9:35 am- Forum: Problem Solving
- Topic: Need help with speed - fastest way to do these problems?
- Replies: 12
- Views: 3001