When the input is certainly not the global variable z, your function must return false. Otherwise return true. All inputs & variable values will be scalar.
Least common multiple of many numbers
Determine if a Given Number is a Triangle Number
Back to basics 23 - Triangular matrix
Angles of the hands of a clock
Make your own Test Suite (part 3)
Back to basics: adding comments to your code
Just take it easy for a second or two!
Arrange the names in alphabetical order (2)
Add all the numbers between two limits (inclusive)
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