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October 24, 2009
→Sample problems and answers: added another
+133
improved
+60
better
+48
→Honors: mathematical
+35
→Medium: moving
+48
excise taxes and deadweight loss
+148
no edit summary
m+1
improved
-612
→Honors: trimmed
-397
→Sample problems: completed difficult problem
+1,381
improved, partially solving a difficult example problem
+2,473
move monopolies to next class
-14,137