How many cards do one need to build a house of cards with n stages?
/\ 2 cards for 1 stage
/_\ 7 cards for 2 stages
@Thomas, the Test Suite is broken. Please provide "x" or replace it with "n" in tests.
Sorry for mistake! You are right! thanks
Determine if input is odd
Back to basics 1 - Saving
Free passes for everyone!
Finding perimeter of a rectangle
center of mass
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