It is currently Mon Oct 22, 2018 12:48 am

 All times are UTC - 5 hours [ DST ]

 Page 1 of 1 [ 2 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: GRE Symbols (Quantitative Comparison)Posted: Sat Apr 14, 2012 3:26 am

Joined: Sun May 30, 2010 3:15 am
Posts: 424
Let a # b = a²

Quantity A: x # 2
Quantity B: x # 3

A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.

The correct answer is (C), the two quantities are equal. The defined function, the pattern defined in the problem introduction, simply says to take the first item a and square it. Note that b plays no active role in the defined function.

So x # 2 will equal x² and x # 3 will also equal x². Note that, just as b played no active role in the pattern provided, the numbers 2 and 3 following the # sign play no active role in determining x # 2 or x # 3. Therefore, the two expressions are identical and the answer is (C).
----------
It is stated:
a # b = a²
Then why a variable x is included in the comparison?

Quantity A: x # 2
Quantity B: x # 3

Top

 Post subject: Re: t.5, s.2, qt.2: symbols.Posted: Sat Apr 14, 2012 3:37 am

Joined: Sun May 30, 2010 2:23 am
Posts: 498
Quote:
a # b = a²
Then why a variable x is included in the comparison?
a # b = a² is the definition of the operation #, where instead of <i>a</i> and <i>b</i> we can plug numbers, values, expressions.

x # y = x²
18 # 4 = 18²
(x + 1) # 10 = (x + 1)²
10 # (x + 1) = 10²

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 2 posts ]

 All times are UTC - 5 hours [ DST ]

#### Who is online

Users browsing this forum: No registered users and 1 guest

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ GMAT    GMAT: Quantitative Section (Math)    GMAT: Verbal Section    GMAT: Integrated Reasoning    GMAT: General Questions GRE    GRE: Quantitative Reasoning (Math)    GRE: Verbal Reasoning    GRE: General Questions General questions    Other questions
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group