Square a number
I would recommend more test cases, including some of matrices.
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
give nth decimal place of pi
Project Euler: Problem 1, Multiples of 3 and 5
Back to basics 9 - Indexed References
Try 1.5.4: Celsius to Fahrenheit
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