Challenge | Score
1 | 83
2 | 95
3 | 77
4 | 93
5 | 89
6 | 99 (*)
7 | 99
8 | 98 (*)
9 | 75
10 | 75
11 | 87
12 | 93 (*)
13 | 89
14 | 98 (*)
15 | 94 (*)
16 | 97
17 | 97
18 | 91
19 | 98
20 | 99
21 | 98
real gmat - 51 (99%)
the challenge interface was being re-done during most of this time so the built in timer wasn't working. thus you could keep going after 75 minutes. i started timing myself. scores marked with a * indicate when i went past the 75 minute mark. in some cases i spent up to 100 minutes. my goal early was on to learn how to do every question, even if it meant struggling during the test. then, from test 16 onwards or so, i was very good at doing the majority of question types. i then started to focus on test-taking strategy and would skip questions in the interest of time. by the last 3-4 challenges i was finishing a few minutes early. also, i would absolutely recommend that you go back and review each question whether you got it right or wrong. make sure you are tackling the problem the fastest way. i spent about 2 hours total on each challenge...75 taking the test and 40 minutes or so reviewing each question and re-doing questions i knew i could tackle faster.
i would really like to thank gmatclub for these challenges. w/o a doubt these challenges raised my score from 85-90% to 99%. the only other math prep i did was the last 1/3-1/4 questions in OG11 and OG quant workbook. i haven't tried
mgmat, kaplan 800, etc.. but i would absolutely recommend these challenges if you're shooting for 49+ quant. well, well worth the $79.