Knowing that 123-45-67+89=100, write a function that gives this result for any order of the digits in the input. Otherwise, the function should give 'NaN'.
Sums with Excluded Digits
Sum of diagonal of a square matrix
Multiples of a Number in a Given Range
Check if is a square
Alternating 1´s and 0´s in a matrix
Ratio between sum of primes and sum of factors
Double the next!
Sum of a geometric series
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