Q. From a Montana reader: “My wife and I were both born on Feb. 22, though in different years. How often does this sort of thing happen?”
A. Assuming all birthdays are equally likely and that people do not choose mates based on birthdays, the probability is simply 1 in 365 (ignoring leap years). That comes to a mere 0.27 percent. Actually, births are more likely in certain months, so the probability of a husband-wife match is a bit greater than this simple estimate. But whatever the odds, “happy birthday birthday” to you both!
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