I though I need to start a huge numerical search.... but not!
Of course not!!
Find the sum of all the numbers of the input vector
letter yes yes & letter no no
Create a square matrix of multiples
Return the first and last characters of a character array
Approximation of Pi
Matrix Pattern 2
Number Puzzle - 054
Number Puzzle - 085
A Simple Shielding Problem
Number Puzzles - 017
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