OT - date digit challenge


OK guys, something light.

Yesterday it was 01:23:45 6/7/89. Big deal. I liked 01:23:45 6/7/89 better anyhow.

Now, for the challenge. What was the last date that had all odd number digits? When will the next date be with all odd digits?


November 29, 2005
January 1, 2007


Hey Bill, that's right if you only consider the 2 digit year. What if you consider the 4 digit year?


There's no difference. Odd numbers are a function of the last digit.

Or do you want all *digits* to be odd?

In that case, you hav to go back to Nov 29, 1999 and forward to Jan 1, 3111!


Yes, you are right, I didn't explain it well enough. I wanted all digits to be odd.

Nov 19, 1999


oh, roight. sorry.

Now, same problem as before, except that if you add up all the digits, the sum must also be odd. (both of these answers are even).

Edited: 6 Apr 2006, 12:13 p.m.


Bill, you're a crafty guy!



Neither of which has ANYTHING to do with my teaching portfolio, which I'm supposed to be working on today.

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