diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..37c2961
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.7.2
diff --git a/test_skeleton.rb b/test_skeleton.rb
index 8f3e6f5..98aa4d2 100644
--- a/test_skeleton.rb
+++ b/test_skeleton.rb
@@ -10,7 +10,11 @@ class TestSkeleton
   # TestSkeleton.new.even_or_odd(0) should return "even"
   # TestSkeleton.new.even_or_odd(-42) should return "even"
   def even_or_odd(number)
-    # Your solution should be here
+    if number.even?
+      'even'
+    else
+      'odd'
+    end
   end
 
   # https://www.codewars.com/kata/5583090cbe83f4fd8c000051
@@ -21,7 +25,7 @@ def even_or_odd(number)
   # TestSkeleton.new.reverse_array(348597) should return [7,9,5,8,4,3]
   # TestSkeleton.new.reverse_array(0) should return [0]
   def reverse_array(number)
-    # Your solution should be here
+    number.to_s.split('').map(&:to_i).reverse
   end
 
   # https://www.codewars.com/kata/554b4ac871d6813a03000035
@@ -36,7 +40,9 @@ def reverse_array(number)
   # There will always be at least one number in the input string.
   # Output string must be two numbers separated by a single space, and highest number is first.
   def high_and_low(test_string)
-    # Your solution should be here
+    array_of_nums = test_string.split(' ').map(&:to_i)
+    array_of_min_max = array_of_nums.minmax
+    answer = array_of_min_max.reverse.join(" ")
   end
 
   # https://www.codewars.com/kata/5b16490986b6d336c900007d
@@ -49,7 +55,14 @@ def high_and_low(test_string)
   # TestSkeleton.new.my_languages({"Hindi" => 60, "Dutch" => 93, "Greek" => 71}) should return ["Dutch", "Greek", "Hindi"]
   # TestSkeleton.new.my_languages({"C++" => 50, "ASM" => 10, "Haskell" => 20}) should return [] 
   def my_languages(hash)
-    # Your solution should be here
+    answer = []
+    arr = hash.sort {|a,b| b[1]<=>a[1]}
+    arr.each do |a|
+      if a[1].to_i >= 60
+        answer.append(a[0])
+      end
+    end
+    answer
   end
 
   # https://www.codewars.com/kata/563089b9b7be03472d00002b
@@ -62,7 +75,10 @@ def my_languages(hash)
   # values_list = [1, 3, 4, 2]
   # TestSkeleton.new.remove_array_elements(integer_list, values_list) should return [5, 6 ,7 ,8]
   def remove_array_elements(source_array, values_array)
-    # Your solution should be here
+    for i in values_array
+      source_array.delete(i)
+    end
+    source_array
   end
 
   # https://www.codewars.com/kata/5b39e91ee7a2c103300018b3
@@ -72,7 +88,13 @@ def remove_array_elements(source_array, values_array)
   # string = "alpha beta beta gamma gamma gamma delta alpha beta beta gamma gamma gamma delta"
   # TestSkeleton.new.consecutive_duplicates(string) should return "alpha beta gamma delta alpha beta gamma delta"
   def consecutive_duplicates(string)
-    # Your solution should be here
+    arr = string.split(' ')
+    arr.each_with_index do |val, index|
+      while arr[index] == arr[index+1] or arr[index] == arr[index-1]
+        arr.delete_at(index)
+      end
+    end
+    arr.join(' ')
   end
 
   # https://www.codewars.com/kata/56747fd5cb988479af000028
@@ -90,6 +112,12 @@ def consecutive_duplicates(string)
   # Output:
   # The middle character(s) of the word represented as a string.
   def middle_chars(test_string)
-    # Your solution should be here
+    str_len = test_string.length
+    index = str_len / 2
+    if str_len.even?
+      test_string[index - 1] + test_string[index]
+    else
+      test_string[index]
+    end
   end
 end