The 1000 set problems (1000sc, 1000rc, 1000ds, etc) are all compiled from retired GMAT questions and are in violation of the GMAC's copyright on said material.
Feel free to contact me directly if you have any questions on this matter.
This thread is now locked.
Strategy Discussion Thread | Strategy Master | GMAT Debrief| Please discuss strategies in discussion thread. Master thread will be updated accordingly. | GC Member Write Ups
GMAT Club Premium Membership - big benefits and savings