... Prep Test 31 Section 1, #7 Magic
31.1.7 is a ... [29.1.7](https://7sage.com/lsat_explanations/lsat-29-section-1-question-07/)< ... condition A in trial 1, B in trial 2 ... Therefore in all of trials 1, 2, and 3; neither ... only know that in trial 1, A didn't happen ...