Test suite needs abs( ).
Updated. Thank you for the feedback
Test if a Number is a Palindrome without using any String Operations
letter yes yes & letter no no
Fibonacci-Sum of Squares
rectangle in circle
Whole Number Un-Concatenator
Factorions: Numbers that equal the sum of the factorials of their digits
Dudeney Numbers: Numbers which are the cube of their decimal sum
Whole Number Concatenator
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