very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Return the Fibonacci Sequence
Is the Point in a Circle?
Find nearest prime number less than input number
Length of the hypotenuse
0, 2, 0, -2, 0, 2, 0, -2, ...
Spot the First Occurrence of 5
Group-wise Euclidean distance
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