I got tired of solving these problems. So, I just wrote a solution that works for everything.
Extract leading non-zero digit
given 3 sides, find area of this triangle
Find the stride of the longest skip sequence
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Is the input divisible by 3?
Is it really a 5?
Rule of mixtures (composites) - weighted bound
Divisible by 2
Rule of mixtures (composites) - upper bound
Temperature Conversion Utility
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