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Number Difference and Erasure Puzzle (Posted on 2015-09-14) Difficulty: 2 of 5
The numbers 1, 3, 32, 33,...,310 are written on a blackboard.
We are allowed to erase any two numbers and write their difference instead (this is always a nonnegative integer.)
After this procedure has been repeated ten times, only a single number will remain.
What values could this number have?

No Solution Yet Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Not too many to list (spoiler?)Steve Herman2015-09-16 12:14:32
SolutionToo many to listJer2015-09-16 09:34:03
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