At Duke University, there’s one exam students spend weeks studying for — and still consistently fail. But this test has nothing to do with engineering or science. Instead, they must prove their knowledge of the subject that reigns supreme on campus: basketball. Follow along for live coverage of Friday's games The questions start simple. Then they quickly escalate. Duke is currently the top overall seed in the NCAA Tournament, and just survived a first-round scare against No. 16 Siena, winning 71-65 on Thursday. The Blue Devils’ roster is full of NBA-caliber talent like freshman star Cameron Boozer, a potential No. 1 draft pick. But they’re also powered by the Cameron Crazies, as the school’s student section is known, one of the most dedicated fan bases in the country. How dedicated are they? Look no further than the “tenting” exam.…