set 26 q 32

Expert replies

radhika1306: Master | Next Rank: 500 Posts; Posts: 144; Joined: Fri Apr 13, 2007 2:25 am

by radhika1306 » Tue Sep 11, 2007 11:03 am

If k = -1, which of the following is (are) true?
I. kk = k
II. |k| = -k
III. k0 = -k
A. I only
B. I and II only
C. I and III only
D. II and III only
E. I, II, and III

Like this post

Source: Beat The GMAT — Problem Solving | Tue Sep 11, 2007 11:03 am

kajcha: Master | Next Rank: 500 Posts; Posts: 321; Joined: Tue Aug 28, 2007 5:42 am; Thanked: 1 times

by kajcha » Tue Sep 11, 2007 12:07 pm

Stmt I cannot be true. (Assuming kk means k*k) as kk = 1 and k=-1
Stmt II for sure is true.

I could not understand stmt III. Looks typo to me.

Anyways, ans would be D as rest of the options have I as choice.

Like this post

radhika1306: Master | Next Rank: 500 Posts; Posts: 144; Joined: Fri Apr 13, 2007 2:25 am

by radhika1306 » Thu Sep 13, 2007 9:39 am

III k^0 = -k

Like this post

agps: Master | Next Rank: 500 Posts; Posts: 101; Joined: Tue Aug 07, 2007 1:45 amFollowed by: 1 member

by agps » Sat Sep 15, 2007 9:52 am

answer is D. as pointed out by kajcha, I is wrong and it's the onbly answer without I in it.

with the correction made by radhika1306 we can confirm that III is also true (-1)^0 = 1 = -k.

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