last study day

took preptest 2 retake Q43 It gave me hardly any repeats.
only 10 incorrect. when I scored Q47 I had around 13 incorrect.
Also in the high score I had more wrong in the last qs versus the first.

first 13Qs 5 incorrect
2nd 13Qs 4 incorrect
last 13Qs 1 incorrect

Seems like the program tries to give you new questions each time you retake a practictest, and thus calculates your score differently, less difficult questions that count for less if correct. If you know what I mean.

preptest 2 retake 2 Q45 total 11 incorrect
9 repeat qs of which 2 in the 2nd half.

first 13 Q 4 incorrect
2nd 2 incorrect
3rd 5 incorrect

I think a good start is important.