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 Square Birthdays (Posted on 2007-11-29)
A date can be written as DD/MM/YY, so that for example 01/08/16 means 1 August 1916. But if you concatenate just the digits, 010816 happens to be a perfect square, as it is 104². Call such a day a "square day".

Adrian's grandfather was one of six cousins born on different square days in the same year, which was a leap year in the 20th century. All of them died on square days in leap years, and none of them lived to see age 99. Each of them except Adrian's grandfather died in the same month as his or her birthday.

What was Adrian's grandfather's date of birth?

 See The Solution Submitted by Charlie Rating: 3.3333 (3 votes)

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 answer Comment 7 of 7 |
Adrian's grandfather was born on 30 March in the year 1904.
 Posted by K Sengupta on 2008-02-06 06:11:49

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