diff --git a/Rakefile b/Rakefile
index 0c2d13f..fb007c6 100644
--- a/Rakefile
+++ b/Rakefile
@@ -6,4 +6,4 @@ Rake::TestTask.new do |t|
   t.test_files = FileList['test/*_test.rb']
 end
 
-task default: :test
+task default: :test
\ No newline at end of file
diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..8a0fa1e 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -4,6 +4,20 @@
 # The least significant bit is at index 7.
 # Calculate  and return the decimal value for this binary number using
 # the algorithm you devised in class.
-def binary_to_decimal(binary_array)
-  raise NotImplementedError
+
+binary = Array.new(8) {rand(0..1)}
+
+def binary_to_decimal(binary)
+  puts binary.join + "\n"
+  a = binary.length
+  decimal = 0
+
+  for i in 0...a do
+    reverse_index = 7 - i
+    num = binary[reverse_index].to_i * 2**i
+    decimal +=num
+  end
+  return decimal
 end
+
+binary_to_decimal(binary)