Brandonmchu

1,048,555

“The greatest shortcoming of the human race is our inability to understand the exponential function.” — Al Bartlett

##Math

General Formula: http://stats.stackexchange.com/questions/27266/simplify-sum-of-combinations-with-same-n-all-possible-values-of-k

In this case we deviate from the general formula ∑k=1n(nck)=2^n−1 by also subtracting an additional nc1(20c1), since there are no meetings of one.

Brandonmchu

#controller
def index
  @bikes = Bike.order('created_at DESC').limit(50).all
  @bikesnew = @bikes.find_all { |bike| bike.created_at > "2013-07-01 17:58:14" }

  respond_to do |format|
    format.js { render :bike_post_ajax }
    format.html
  end
end