Are you in or are you out?
Twins in a Window
Project Euler: Problem 10, Sum of Primes
Find perfect placement of non-rotating dominoes (easier)
Try 1.5.4: Celsius to Fahrenheit
Five steps to enlightenment
Knights and Knaves (part 1)
love is an n-letter word
yet another flying fly (YAFF)
Clockwise or Counterclockwise
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