Alex Trebek never pretended to have all the answers, but the “Jeopardy!” host became an inspiration and provided solace to Americans who otherwise are at odds with each other. He commanded his turf — the quiz show’s stage — but refused to overshadow its brainy contestants. And when he faced the challenge of pancreatic cancer, which claimed his life Sunday at age 80, he was honest, optimistic and graceful. Trebek died at his Los Angeles home, surrounded by family and friends, “Jeopardy!” studio Sony said. We thought we’d put together a little quiz to test your knowledge -- in “Jeopardy!” format, of course.