Function Question

Expert replies

gohoosiers7: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Thu Jul 09, 2009 7:13 pm

by gohoosiers7 » Thu Jul 09, 2009 7:16 pm

Hi all,

This is listed as a function question in my princeton review book and I'm not understanding it well

If [a] is the least integer greater than or equal to a, then [-4.5] + [4.5] =

[-1.5]
[-.5]
[0]
[.5]
[1.5]

Any help would be greatly appreciated. Thanks

Like this post

Source: Beat The GMAT — Problem Solving | Thu Jul 09, 2009 7:16 pm

barnum: Junior | Next Rank: 30 Posts; Posts: 16; Joined: Wed May 20, 2009 9:57 am; Thanked: 1 times

by barnum » Thu Jul 09, 2009 9:37 pm

What they're saying is that if you see a number in between brackets it is equal to integer that is just to the right of it on the number line. So

[-4.5] would equal -4

and

[4.5] would equal 5

so [-4.5] + [4.5] = -4 + 5 = 1

Now you have to see that all the answers still have the brackets around them, so you need to choose one that when using their rule would ultimately equal 1. Answer choice D [.5] would equal 1 because 1 is the least integer greater than .5

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review