You're *very* close with this one. Remember that r is input as a double, not a string.
Remove the vowels
Sum of diagonal of a square matrix
Return unique values without sorting
Sleeping Queens 1
Sums of Multiple Pairs of Triangular Numbers
Go to the head of the class!
Two fractions, one sum
Pandigital Multiples of 11 (based on Project Euler 491)
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