Same issue here as in your third problem. Please check the absolute value of the differences of the computed values with the correct ones. Otherwise, more silly answers (again, like this one :-) will slip through!
Thanks for the catch. I've updated the test suite to check against upper and lower bounds of each answer.
Read a column of numbers and interpolate missing data
Solve the set of simultaneous linear equations
Scoring for oriented dominoes
Number of 1s in a binary string
Matlab Basics II - Minimum
Scrabble Scores - 4
Temperature Conversion Utility (Strings)
Legend of Zelda - Rupee Count (Compact)
Scrabble Scores - 6
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