May you add some testcases concerning that ~mod(63-45,9) = true, but 63 and 45 has definitely not the same digits.
Get the area codes from a list of phone numbers
Roll the Dice!
Basics: 'Find the eigenvalues of given matrix
05 - Vector Equations 2
07 - Common functions and indexing 2
Number of Circles in a Number
First N Perfect Squares
Number of 1s in the Binary Representation of a Number
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