Search found 34 matches
- by Mr.Hollywood
Thu Mar 15, 2012 5:02 pm- Forum: Problem Solving
- Topic: exponent+percentage+decimal problem
- Replies: 1
- Views: 1347
exponent problem again......
6^x=8100, what is（1/3)^(x-3)
I dont have the answer choices, I'd probably plug it in.
However I was wondering if anybody know how to solve this without answer choices provided?
Thanks!
- by Mr.Hollywood
Wed Mar 14, 2012 9:59 pm- Forum: Problem Solving
- Topic: exponent problem again......
- Replies: 1
- Views: 1344
Hi, there. I'm happy to help with this. :) First of all, I'll say: this question is unusual in form, because GMAT PS questions invariably have 5 answer choices. Also, the numbers seem a bit smaller and simpler than I've seen on analogous GMAT questions. Also, on the real GMAT, answer choices are al...
- by Mr.Hollywood
Wed Mar 14, 2012 11:02 am- Forum: Problem Solving
- Topic: Over lapping problem......again, kinda tricky
- Replies: 3
- Views: 1570
Over lapping problem......again, kinda tricky
A school has 3 classes, math class has 14 students. English class has 10 students, PE class has 11 students. There are 20 students taking only one class, 3 students are taking all three classes. How many students are taking two classes? A) 6 B) 3 C) 9 D) 18 I personally think it's A What do you guys...
- by Mr.Hollywood
Tue Mar 13, 2012 12:48 pm- Forum: Problem Solving
- Topic: Over lapping problem......again, kinda tricky
- Replies: 3
- Views: 1570
Somehow i have become very good in the logical structure CRs. The answer is E. I really did not get the answer as D. D is completely wrong. I was a bit confused between B and E. E is right as the advanced judgement was in favor of the conclusion and not against. Thank You... Thank you. I actually c...
- by Mr.Hollywood
Sat Mar 10, 2012 5:55 pm- Forum: Critical Reasoning
- Topic: Super confusing Astronomer question!
- Replies: 6
- Views: 2269
Remainder problem
N is divisible by 5, what is the remainder of N when divided by 6?
1) when N is divided by 4, remainder is 3
2) when 3N is divided by 12, remainder is 3
I think it's E, anybody seeing any other possibilities?
- by Mr.Hollywood
Fri Mar 09, 2012 4:36 pm- Forum: Data Sufficiency
- Topic: Remainder problem
- Replies: 1
- Views: 1072
Great question :). I was actually just reading about the comet crashing into Jupiter (the incident was part of a critical reading passage I was creating). Anyhow, to the task at hand! The first bolded sentence provides an insight that will give scientists a clue as to how large the fragments were. ...
- by Mr.Hollywood
Thu Mar 08, 2012 3:27 pm- Forum: Critical Reasoning
- Topic: Super confusing Astronomer question!
- Replies: 6
- Views: 2269
Super confusing Astronomer question!
Astronomer: Observations of the Shoemaker-Levi comet on its collision course with Jupiter showed that the comet broke into fragments before entering Jupiter's atmosphere in 1994, but they did not show how big those fragments were. In hopes of gaining some indication of the fragments' size, astronome...
- by Mr.Hollywood
Thu Mar 08, 2012 1:37 pm- Forum: Critical Reasoning
- Topic: Super confusing Astronomer question!
- Replies: 6
- Views: 2269
Number properties and exponents
X, Y and Z are all positive even integers. What could be the answer of X^2+Y^2+Z^2
A) 234
B) 138
C) 862
D) 636
Does anybody have a clue how to approach or solve this?
Thank you!
- by Mr.Hollywood
Tue Mar 06, 2012 12:50 am- Forum: Problem Solving
- Topic: Number properties and exponents
- Replies: 1
- Views: 982
w/x=x/y =>y=x^2/w .......(1) and x/y=y/z =>z=y^2/x........(2) Now w/z =w(x/y^2) (using z from 2) =(w/y)*(x/y) =(w/y)*(w/x) (because w/x=x/y) =w^2/(xy) =(w^2/x)*(1/y) =(w^2/x)*(w/x^2) (using y from 1) =(w/x)^3 My god this is brilliant! Who'd thought of that?! I noticed you started out with y and z, ...
- by Mr.Hollywood
Mon Mar 05, 2012 2:12 am- Forum: Problem Solving
- Topic: fraction problem, seriously driving me bananas!
- Replies: 9
- Views: 1688
That is actually the answer I was given, would you mind sharing your steps?killer1387 wrote:M GETTING W/Z=(W/X)^3.
whats d answer or options?
- by Mr.Hollywood
Mon Mar 05, 2012 12:25 am- Forum: Problem Solving
- Topic: fraction problem, seriously driving me bananas!
- Replies: 9
- Views: 1688
- by Mr.Hollywood
Sun Mar 04, 2012 10:33 pm- Forum: Problem Solving
- Topic: fraction problem, seriously driving me bananas!
- Replies: 9
- Views: 1688
- by Mr.Hollywood
Sat Mar 03, 2012 10:48 pm- Forum: Data Sufficiency
- Topic: Inequality Data Sufficiency
- Replies: 2
- Views: 1067
Data Sufficiency Problem
A man went on a n miles trip. Its first 1/6 of the time was completed with a speed of r mile/hr. First 1/2 of the time was completed with a speed of 8 miles/hr. The first 1/3 of the time was completed with a speed of 12miles/hr. What is the man's average speed? （1）n=20 （2）r=4 The Answer seem...
- by Mr.Hollywood
Fri Mar 02, 2012 7:58 pm- Forum: Data Sufficiency
- Topic: Data Sufficiency Problem
- Replies: 2
- Views: 1078
Q Laura has a deck of card with 13 of the 52 cards designated as heart. If she shuffles thouroughly and then deals 10 cards off the top of the deck, what is probability that 10th card dealt is a heart. a)1/4 b)1/5 c)5/26 d)12/42 e)13/42 should it be 13/42 or 1/4.ans is 1/4 P(heart on the N th pick)...
- by Mr.Hollywood
Mon Feb 27, 2012 9:43 pm- Forum: Problem Solving
- Topic: stuck in prob again
- Replies: 3
- Views: 1135