Test suite needs abs( ).
Updated. Thank you for the feedback
Check if sorted
pressure to dB?
Back to basics 20 - singleton dimensions
Magic is simple (for beginners)
Divisible by 10
Dudeney Numbers: Numbers which are the cube of their decimal sum
Airline Ticket Mod7 Checksum
Whole Number Concatenator
What is the nth step in Conway's Life?
Factorions: Numbers that equal the sum of the factorials of their digits
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