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Comments in green were written by me. Comments in blue were not written by me.

2020-12-25

@Dean: you can also go through each answer one at a time and change a digit; if the number of wrong answers goes up then your answer for that question was correct

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2020-12-25

@A: Aha, I should have thought of this! Puzzles completed :-)

(anonymous)
on /blog/86

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