Monday, November 29, 2010

Interesting family birth arrangement

Yesterday, pondered the fact that we are a family of six. Our birthdays are distributed through the year so that: the birthdays occur in two sets of three consecutive months, Aug., Sept., Oct., and Feb., Mar., Apr. This is remarkable enough, but I also just realized: the birth dates are also chronologically arranged so that our youngest occurs first in the series, the second son born occurs second, the third occurs third, and the fourth, fourth, then Carol's birthday, followed by mine-i.e. if you count from Aug., the birthdays go from the youngest family member to the oldest. The two groups of birthdays are also separated, of course by three months. Just wondered what the odds against such a grouping of birthdays are? Any actuary's reading this?

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