In the place of "Find the sum of all products whose...", I would say: "Find the number of all products whose..." ;-)
Why  instead of 0?
Since I have kludged a solution together, can I have a hint?
this solution works on my comupter
I see the first test command line is corrupted
:( :( :(
I've fixed that first line in the test suite. Try it again.
Volume of a Parallelepiped
Given a window, how many subsets of a vector sum positive
Side of a rhombus
Sum of big primes without primes
Find files with extension ext in the current directory
Clear all empty variables from the workspace
Generalised Hamming Number
Mysterious digits operation (easy)
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