All,
Recently I started practicing from old official guides, since I completed all official questions from recent OGs and was looking for additional practice. Since there is an overlap in official guides, it's hard to find questions that are unique to a particular
OG and not repeated anywhere else. I used this list for targeted practice as Parallelism was my weak area.
This list consists of ALL questions testing parallelism. This is NO overlap (all questions are distinct). If you can get a hold of these old official guides, going over through the following questions can really help you prepare one of the most tested topic in SC verbal. I will include OG17 and OG18 and also post a similar list for other SC topics.
OG 10:
40,53,73,78,84,96,152,160,166,190,197,264.
OG Verbal, FE:
14,27,47,52,81.
OG Verbal, SE/2015:
3,7,27,34,39,61,93,112.
OG 11:
18,35,47,64,84,91,99,112,119,124,130.
OG 12:
28,29,42,90,94,130,139.
OG 13/2015:
18,37,66,74,80,119,121,127,134,137.
OG VR,16:
1,2,4,5,6,8,16,17,23,28,34,35,54,56,57,61,64,70,72,79,92,99,100,106,107,108.
OG 16:
3,14,19,23,30,33,38,42,46,47,55,64,65,66,70,71,75,80,83,
86,91,95,97,99,102,120,123,125,131,133,136.
Diagnostic Test:
D38,D48,D50,D51,D52
Hope this helps!
NOTE: Some questions from OG10/11 do appear in free GMAT Prep tests. Please skip those if you haven't taken the free tests.