gotta be honest, I did a double take when I saw that numbers could be happy.
sorry for that.
Find out missing number from a vector of 9 elements
Side of a rhombus
Sum of diagonals elements of a matrix
Sum of odd numbers in a matrix
Sum of series III
Tony's trick for duplicating an mx1 vector n times
Create numeric palindromes and their square roots
Magic Concentric Circles
Strange Number Algorithms
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