Test case gives away solution!
I didn't think the main MATLAB program counted as a toolbox. Oops.
I think James is right: MATLAB itself isn't normally classified as a "Toolbox". Further, I think there may be another issue too, in that the Test Suite may only be considering Toolboxes from MathWorks, and disregarding third-party Toolboxes (see my Solution 1505802 for more on this), although there is no such restriction in the Problem Statement. On the other hand, that probably wasn't an issue when this problem was created in 2012! —DIV
The answer should be 0. It is written on the FAQ: "Cody supports MATLAB and not the toolboxes".
Times 2 - START HERE
Set some matrix elements to zero
Sophie Germain prime
What number has this problem?
Back to basics 16 - byte order
Back to basics 20 - singleton dimensions
Back to basics 15 - classes
Back to basics 19 - character types
Back to basics 18 - justification
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