Merge pull request #43 from pain11/master

Geometric progression in ruby

Author: abranhe

math/geometric_progression.rb

@@ -0,0 +1,6 @@
+def geometric_progression initial, ratio, numbers
+    (numbers - 1).times.inject([initial]){|array| array << array.last * ratio}
+end
+
+puts "geometric_progression(2, 2, 10): #{geometric_progression(2, 2, 10)}"
+puts "geometric_progression(2, 0.5, 10): #{geometric_progression(2, 0.5, 10)}"