Art of Problem Solving
Art of Problem Solving
AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy
Small live classes for advanced math
and language arts learners in grades 2-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus
During AMC 10A/12A testing, the AoPS Wiki is in read-only mode and no edits can be made.

2011 AMC 12B Problems/Problem 9: Revision history

Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

4 July 2013

10 November 2011

12 July 2011

29 May 2011

10 March 2011

  • curprev 19:1419:14, 10 March 2011 Applepi2000 talk contribs 404 bytes +404 Created page with 'For the product to be greater than zero, we must have either both numbers negative or both positive. Both numbers are negative with a <math>\frac{2}{3}*\frac{2}{3}=\frac{4}{9}<…'
Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=2011_AMC_12B_Problems/Problem_9"