Search found 504 matches
Expert help on this problem would be appreciated
Suppose A and B are two events, not independent. Is the probability P(A and B) > 1/3? (1)P(A) = 0.8 and P(B) = 0.7 (2)P(A or B) = 0.9 OA is A My query is just this. Since the stem explicitly states that the two events are not independent, are we to assume that the two events ARE dependent? If that's...
- by knight247
Wed Mar 25, 2015 4:32 am- Forum: Data Sufficiency
- Topic: Expert help on this problem would be appreciated
- Replies: 1
- Views: 1459
IR Practice
Hi, I just completed reading the Manhattan's Guide 9, "Integrated Reasoning and Essay". Considering I'm pretty decent with Quant, and didn't per se learn anything new reading the book, I am assuming I'm going to be pretty decent with IR as well. My questions are: What resources are out the...
- by knight247
Tue Mar 17, 2015 1:28 am- Forum: GMAT Integrated Reasoning
- Topic: IR Practice
- Replies: 4
- Views: 5168
Speed
In a race of 600 metres, Adam beats Victor by 60 metres. In a race of 500 metres, Victor beats Angie by 25 metres. By how many metres will Adam beat Angie in a 400 metre race?
OA 58 Metres
Detailed explanations would be appreciated. Many thanks in advance.
- by knight247
Fri Mar 06, 2015 9:41 am- Forum: Problem Solving
- Topic: Speed
- Replies: 5
- Views: 2299
Co-ordinates Problem -- Expert advice would be appreciated
The OA is A When I solve the problem in the way I'm most familiar with, I get A and C as the right answers, and I'm simply not able to solve any further and choose between those two options. The explanation provided is not detailed enough to understand. I hope to get some expert advice on this. Deta...
- by knight247
Fri Feb 27, 2015 11:37 pm- Forum: Problem Solving
- Topic: Co-ordinates Problem -- Expert advice would be appreciated
- Replies: 1
- Views: 1475
Clarification needed on DS problem
If x and y are integers and 4xy=(x^2)(y)+(4y), what is the value of xy? (1) y-x=2 (2) x^3<0 The OA is [spoiler] B [/spoiler] My query might be a silly one, so please bear with me. We are given 4xy=(x^2)(y)+(4y) in the problem. Why can't I divide throughout by y there and get x=2, and then tackle bot...
- by knight247
Sat Feb 07, 2015 11:12 pm- Forum: Data Sufficiency
- Topic: Clarification needed on DS problem
- Replies: 6
- Views: 2361
Graphical Solution
In the xy-plane, region R consists of all the points (x, y) such that 2x + 3y =< 6 . Is the point (r,s) in region R? (1) 3r + 2s = 6 (2) r=< 3 and s=< 2 I was able to solve this simply by trial and error. The answer is E However, when I solve it graphically, I encounter a problem. I'm able to prove ...
- by knight247
Tue Jan 20, 2015 5:31 am- Forum: Problem Solving
- Topic: Graphical Solution
- Replies: 3
- Views: 1728
Correct form
I'm hoping to get expert help on this one. I have two forms of a sentence here, and I'd like to know which of the two are acceptable on the GMAT. Form 1: Stop cheering those thuggish protesters on . Form 2: Stop cheering on those thuggish protesters. Detailed explanations would be appreciated. Thanks.
- by knight247
Tue Dec 30, 2014 1:52 pm- Forum: Sentence Correction
- Topic: Correct form
- Replies: 1
- Views: 1449
Run off
Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed. A.it appears was an ancient lakeshore hunting ground as stunning ev...
- by knight247
Tue Dec 09, 2014 12:19 am- Forum: Sentence Correction
- Topic: Run off
- Replies: 1
- Views: 1222
- by knight247
Mon Dec 08, 2014 11:19 pm- Forum: Sentence Correction
- Topic: Singular or plural?
- Replies: 2
- Views: 1431
Singular or plural?
Is "One in five Americans" (or anything similar) considered singular or plural? Which of the following are correct? (1) One in five Americans SUFFERS from some form of obesity. Or (2) One in five Americans SUFFER from some form of obesity. And what about "Three out of five" ? Whi...
- by knight247
Mon Dec 08, 2014 9:59 am- Forum: Sentence Correction
- Topic: Singular or plural?
- Replies: 2
- Views: 1431
Slightly off-syllabus
This might be a lightly off-syllabus problem, but hoping to be one step ahead of the GMAT, so help with this problem would be highly appreciated.
I don't have an OA for this one. Detailed explanations would be appreciated.
- by knight247
Sun Dec 07, 2014 12:01 pm- Forum: Problem Solving
- Topic: Slightly off-syllabus
- Replies: 1
- Views: 1097
- by knight247
Tue Dec 02, 2014 10:48 am- Forum: Problem Solving
- Topic: the sun was shining on him?
- Replies: 5
- Views: 2595
Bullets
Victor fires two bullets from the same place with an interval of 12 minutes between each bullet. Ron, sitting in a train approaching Victor, hears the sound of the second bullet 11 minutes and 30 seconds after he hears the sound of the first. What is the speed of the train if the speed of sound is 3...
- by knight247
Tue Dec 02, 2014 10:46 am- Forum: Problem Solving
- Topic: Bullets
- Replies: 1
- Views: 6132
- by knight247
Thu Nov 27, 2014 1:55 pm- Forum: Problem Solving
- Topic: Post deleted.
- Replies: 1
- Views: 1301
Alternate method required
There are three secretaries who work for four departments. If each of the four departments has one report to be typed out, and the reports are randomly assigned to a secretary, what is the probability that all three secretaries are assigned at least one report? OA -- [spoiler]4/9[/spoiler] I'm full...
- by knight247
Wed Nov 26, 2014 10:51 am- Forum: Problem Solving
- Topic: Alternate method required
- Replies: 2
- Views: 1319