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Answer by EKons for 1 0 1 0 1 0 1 0 1 0 1
To answer the bonus question, you'll need:This is optimal for the reason given in Gareth's answer by himself:Of course, the main solution has already been given.
View ArticleAnswer by Gareth McCaughan for 1 0 1 0 1 0 1 0 1 0 1
Here is a simple, but optimal, solution.uses a total ofThe best one could hope for isAnd in fact,
View Article1 0 1 0 1 0 1 0 1 0 1
Start with the digits: $1\ 0\ 1\ 0\ 1\ 0\ 1\ 0\ 1\ 0\ 1$You may then add (only!) these simple arithmetic operators: $+\ -\ \times\ \div$You may also remove the space between no more than 3...
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