It was a double-layered leap year for a Needham family who welcomed a 6-pound, 6-ounce baby girl into the world yesterday on the mother’s quadrennial birthday.
“I’d really like to know the odds of this happening,” said a beaming Christine Cullen, who gave birth to her as-yet-unnamed daughter at 4 p.m. at Brigham and Women’s Hospital in Boston. — Boston Herald, 1 March 2008
About 1 in 2,134,521. (There are 365*4+1=1461 days in four years, so around 1 in 1461 births happen on 29 Feb. The chance that someone born on 29 Feb has a 29 Feb child is then 1 in 1461*1461, thus 1 in 2,134,521). Or, if you’d rather, about 0.00000047.
Post a Comment