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Sum Numbers, Get Even (Digits)? (Posted on 2007-08-15) Difficulty: 3 of 5
P is a 17 digit positive integer and Q is obtained by writing the digits of P backwards. If neither P nor Q has leading zeroes, can P+Q include no even digits?

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (3 votes)

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re: solution | Comment 2 of 5 |
(In reply to solution by Daniel)

But what if there's a carry from the 10th + 8th digit total?
  Posted by Charlie on 2007-08-15 11:34:00

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