mxbr

3 ms·

1. 1.▲
   Hidden Colors in Water [video](youtube.com)

   2 points by mxbr 4y ago|0 comments
2. 2.▲
   by mxbr 7y ago

   2 * (1..12).reduce(&:+) You could also use the closed summation formula: (n^2 + n) / 2. In our case that shortens to just 12*13=156.
3. 3.▲
   by mxbr 7y ago

   For Berlin, there is an interesting visualization of this question: https://verkehrsluecken.tagesspiegel.de/en/