Ask Questions, Discuss Approaches & No Clutter
flamingo
0

If there are more than two numbers in a certain list

Solved 1 Answers 111 Views Data Sufficiency

If there are more than two numbers in a certain list , is each of the number in the list equal to 0? 
1. The product of any two numbers in the list is equal to 0. 
2. The sum of any two numbers in the list is equal to 0. 

1 Best Answer

flamingo
0
Best answer
(1) The product of any two numbers in the list is equal to 0 --> it certainly possible all numbers to equal to 0 but it's also possible one number to be different from 0 and all other numbers to equal to 0 (in this case the product of ANY two numbers in the list will also be equal to 0). Not sufficient.
(2) The sum of any two numbers in the list is equal to 0 --> as there are more than 2 numbers in the list then all numbers must equal to 0 (if we were not told that there are more than 2 numbers in the list then it would be possible to have a list like {-1, 1} but as there are more than 2 numbers then in order the sum of ANY two numbers in the list to be equal to 0 all numbers must equal to zero). Sufficient.
Answer: B.
answered Apr 5, 2016 by Guru (5,628 points)
selected May 7, 2016 by
Student Speaks

Jyotsna Mehta

Indian School of Business, Co'18

I am very thankful to Gmatxchange and would definitely recommend Gmatxchange mentors to all those students applying for MBA admissions

Your Tentative GMAT Score
Estimate your GMAT score.
700
The scorer helps you to determine your current level within a few questions you solve.Read More
Please log in or register to use the Scoring Feature
Confused about your profile & colleges, Get FREE profile evaluation today from over 10 consultants.
Follow us and get quick prep updates on Facebook
...