yes, i have been going through knewton CAT questions..well, i took gmatprep test multiple times before my last 2 gmat attempts in 2011..today i took gmatprep test1 and scored 710.(Q46, V42)...since it has been over 4 months, i did not remember the right answers, though some of the questions did look familiar...while i am happy about the V score, Q score is a bit disappointing..i made some silly mistakes on very easy question toward the end of the test..more interestingly, i got 19 incorrect answers on Q and still scored 46..how is that possible? my mistakes were not necessarily clustered in 2nd half of the test, but were rather evenly distributed..anyways, i am just suprised to see 19 incorrect and still Q46..