I think there is a problem with the test or tests, since even the default solution fails to evaluate with 'Parse error' indicated.
I agree. Function names cannot start with numbers, so this problem should be revised.
The server encountered an error while evaluating the solution.
Remove the air bubbles
Who knows the last digit of pi?
Count up then down
Sum the elements in either diagonal of a square matrix
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Back to basics 18 - justification
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Back to basics 8 - Matrix Diagonals
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