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GMAT Prep If n= 1/3

From GMAT Prep. If n= 1/3 +1/3^2+1/3^3 then N is between

0 and 1/9
1/9 and 1/3
1/3 and 8/9
8/9 and 4/3
4/3 and 2

What is our thought process to get through this math without a calculator or spreadsheet for that matter?

by barksdale

Tue May 30, 2017 6:54 pm
Forum: Problem Solving
Topic: GMAT Prep If n= 1/3
Replies: 7
Views: 2481

If x and y are integers

If x and y are integers and x > 0, is y > 0?

(1) 7x - 2y > 0
(2) -y < x

What is the process we use to know the answer is D?

by barksdale

Tue May 30, 2017 6:51 pm
Forum: Data Sufficiency
Topic: If x and y are integers
Replies: 4
Views: 1697