yes nice problem
It's called recycling :)
Remove all the words that end with "ain"
Distance walked 1D
Sum of diagonal of a square matrix
Try 1.5.4: Celsius to Fahrenheit
Beginner's Problem - Squaring
Length of a short side
Find a Pythagorean triple
Dimensions of a rectangle
Side of an equilateral triangle
Side of a rhombus
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