"Amy's Luck" and "The Improbability Principle" by David Hand
These are two books by the same British mathematician, the first can be skipped, I think, but the 2nd is very memorable. "Amy's Luck" tells of a child who kept having bad luck and starts to search for good luck. The 2nd is one of my favorites and is a collection of things that happened that are not at all likely.
One improbable story is about a man who was struck by lightning more than once but not hurt. Lightning struck his grave after his death! Another improbable event is about an American woman who drew the winning numbers in two state lotteries but unhappily got the numbers switched, winning nothing!