Search found 8 matches


If x^2 + y^2 =1, is x + y =1? (1) xy =0 (2) y = 0 IMO: E the question says x^2+y^2=1 which means either of the one should be one and the other a zero, which means for if x+y=1,then one of them is 1 and the other a zero Looking at statements: 1) it says xy=0, for this to be true either both can be ze...

by coolanubhav2002

Thu Nov 15, 2012 1:54 am
Forum: Data Sufficiency
Topic: Inequality
Replies: 30
Views: 13343

Don't noe if this approach is good but i picked numbers for this problem where x=2,a=3 so (x+a)^2=y^2 which is (2^2+2(6)+3^2)=25, so y= 5,so seeing the statements only statement (A) satisfies the condition where x= 5-3, which gives us 2 so it is sufficient whereas statement 2 gives us x= 5+3, which ...

by coolanubhav2002

Fri Nov 09, 2012 3:10 am
Forum: Data Sufficiency
Topic: equations DS
Replies: 30
Views: 13152
by coolanubhav2002

Fri Nov 02, 2012 3:07 am
Forum: Critical Reasoning
Topic: CR: Closely parallels
Replies: 5
Views: 1748

COULD SOMEONE REVIEW THIS ESSAY FOR ME!

The following was used as part of an internet advertising company's appeal to businesses: Furniture Depot employed our internet advertising company to help. Since then its sales increased by 10% over last year's totals. Furniture Depot's success demonstrates how using our internet services can incre...

by coolanubhav2002

Fri Nov 02, 2012 3:04 am
Forum: GMAT Essays (AWA)
Topic: COULD SOMEONE REVIEW THIS ESSAY FOR ME!
Replies: 0
Views: 1008

IMO: the answer to this question should be D as if the place where the person is standing is not told in the problem,so it is required that the length of the platform should be the time taken for the train to cross the platform i.e. distance=speed *time, 72* 30=2160*1000/3600=600 metres. Overall the...

by coolanubhav2002

Thu Nov 01, 2012 2:50 am
Forum: Problem Solving
Topic: What is the length of the platform in meters...............
Replies: 46
Views: 27541

CR: Closely parallels

A bullet train travels in excess of 150 miles per hour. Therefore, if a train travels slower than 150 miles per hour, it is not a bullet train. Which of the following most closely parallels the reasoning used in the argument above? (A) An orange ripens only on the vine. If it ripens on the vine, the...

by coolanubhav2002

Sat Oct 27, 2012 3:48 am
Forum: Critical Reasoning
Topic: CR: Closely parallels
Replies: 5
Views: 1748

Tricky CR pharmaceutical company

A pharmaceutical company claims that its new drug promotes learning in children. To back up its claims, the company points to a study of 300 children who were given the drug, along with a control group of 300 children who were given a placebo. The 300 children who were given the drug reported that t...

by coolanubhav2002

Sat Oct 27, 2012 3:30 am
Forum: Critical Reasoning
Topic: Tricky CR pharmaceutical company
Replies: 3
Views: 1494

Shark Attacks

Experts studying patterns of shark attacks on humans have noted that attacks tend to diminish when the water temperature drops below 65 degrees Fahrenheit. Until recently, researchers believed this was because sharks prefer warmer water, and thus are present in fewer numbers in colder water. However...

by coolanubhav2002

Sat Oct 27, 2012 3:01 am
Forum: Critical Reasoning
Topic: Shark Attacks
Replies: 2
Views: 1201