BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

GMAT Prep Question

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Sat May 17, 2008 3:53 pm

GMAT Prep Question

by pranaysad » Sat May 24, 2008 6:45 pm
If there are more than 2 numbers in a certain list, is each of the numbers in the list equal to 0?

1) The PRODUCT of any 2 numbers in the list is equal to 0
2 ) The SUM of any 2 numbers in the list is equal to 0

Could some please let me know how to solve this one?
Top
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Sat May 17, 2008 3:53 pm

Gmat Prep Question

by pranaysad » Sat May 24, 2008 6:52 pm
Sorry i think i figured this out finally. Funny the minute you post something it comes to you :)

Case 1. Product of any number is = 0
{0,5,0,0,0,0} Product of any 2 numbes is equal to 0.

Case 2: Sum of any number = 0

For the sum of any 2 numbers to be zero
-3,3
{ -3,3,3,3,3} does not work since 3+3 = 6
-3+3=0
0,3,0 does not work. Therefore all the numbers must be 0.

B
Top
Junior | Next Rank: 30 Posts
Posts: 11
Joined: Thu Apr 17, 2008 11:33 am

by athinabean » Thu May 29, 2008 12:55 am
what if you have 3, -3, and 0? Problem says there are more than two numbers)
it works for both scenarios: their product is 0 and they add to cero. The not all need be 0....

I am I missing something?

oops. sorry my bad, you are right :)
Top
Post new topic Post Reply
• Page 1 of 1