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Square Your Age (Posted on 2003-04-15) Difficulty: 2 of 5
The other day, Jim excitedly told me, "Did you realise I will turn x years old in the year x^2?"

He wasn't the first to think of this. The 19th century mathematician August de Morgan used to used to boast that he was x years old in the year x^2. He died in 1871.

In what year was Jim born? When will his prediction be true? In what year was de Morgan born? What is x in each case?

See The Solution Submitted by pleasance    
Rating: 2.7500 (8 votes)

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Some Thoughts answer | Comment 18 of 20 |

August de Morgan was born in 1806

He was precisely 1849 - 1806 = 43 years old in the year 1849 (43^2)

  Posted by K Sengupta on 2007-04-10 12:35:47
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