Palindromic Dates

Number Theory Level pending

What is the sum of the first palindromic date nearest to and before 2000?

palindromic dates are like:

12/25/5221

30 16 28 26 32

Cheese- Kun by cheese- kun , 15, Philippines

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1 solution

The date asked for is 29 / 11 / 1192 29/11/1192 , the sum of the numbers in it is 2 ( 2 + 9 + 1 + 1 ) = 26 2(2+9+1+1)=\boxed {26} .

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What about 12/31/1321? I thought the required format was MM/DD/YYYY.

tom engelsman - 9 months, 3 weeks ago

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Agreed, but in that case I believe 09/31/1390 would be the latest date, luckily still with a digit sum of 26.

A Former Brilliant Member - 9 months, 3 weeks ago

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