Distraction

Maybe time for a little distraction from the approaching apocalypse and accompanying probabilities of the Trump virus, er, uhhh, I mean Corona virus, and get back to some math. So here's Alex Bellos' latest puzzle, a probability one from Peter Winkler, for The Guardian:
https://www.theguardian.com/science/2020/mar/23/can-you-solve-it-meet-the-puzzle-king

By the way, the above link to Winkler's brief Wikipedia page offers this chuckle-worthy story of Paul Erdos' attendance at the Bar Mitzvah celebration for Winklers' twin boys (the story is quoted from Hoffman's "The Man Who Loved Only Numbers"):

"Erdös came to my twins' bar mitzvah, notebook in hand," said Peter Winkler, a colleague of Graham's at AT&T. "He also brought gifts for my children--he loved kids--and behaved himself very well. But my mother-in-law tried to throw him out. She thought he was some guy who wandered in off the street, in a rumpled suit, carrying a pad under his arm. It is entirely possible that he proved a theorem or two during the ceremony."

Meanwhile, happy handwashing everyone... and in the immortal words of Yogi Berra (supposedly) keep in mind, "It's tough to make predictions, especially about the future."