diff --git a/Maths/3n+1.py b/Maths/3n+1.py
index 6424fe0d8f15..ae175e28d40c 100644
--- a/Maths/3n+1.py
+++ b/Maths/3n+1.py
@@ -13,7 +13,9 @@ def n31(a):# a = initial number
         return l , c
     print(n31(43))
     print(n31(98)[0][-1])# = a
+    print(n31(13))
     print("It took {0} steps.".format(n31(13)[1]))#optional finish
 
 if __name__ == '__main__':
     main()
+
diff --git a/Maths/abs.py b/Maths/abs.py
index 5b758f8389b4..dc97c2b351c4 100644
--- a/Maths/abs.py
+++ b/Maths/abs.py
@@ -1,9 +1,9 @@
 def absVal(num):
     """
     Function to fins absolute value of numbers.
-    >>>absVal(-5)
+    #>>>absVal(-5)
     5
-    >>>absVal(0)
+    #>>>absVal(0)
     0
     """
     if num < 0:
@@ -16,3 +16,5 @@ def main():
 
 if __name__ == '__main__':
     main()
+
+
diff --git a/Maths/absMax.py b/Maths/absMax.py
index 432734ec02c0..a7bb2882dcd8 100644
--- a/Maths/absMax.py
+++ b/Maths/absMax.py
@@ -1,22 +1,27 @@
-from abs import absVal
+from Maths.abs  import absVal
+
 def absMax(x):
     """
-    >>>absMax([0,5,1,11])
+    #>>>absMax([0,5,1,11])
     11
     >>absMax([3,-10,-2])
     -10
     """
-    j = x[0]
+    j =x[0]
     for i in x:
-        if absVal(i) < j:
+        if absVal(i) > absVal(j):
             j = i
     return j
     #BUG: i is apparently a list, TypeError: '<' not supported between instances of 'list' and 'int' in absVal
-
+    #BUG fix
 
 def main():
-    a = [1,2,-11]
-    print(absVal(a)) # = -11
+    a = [-13, 2, -11, -12]
+    print(absMax(a)) # = -13
 
 if __name__ == '__main__':
     main()
+
+"""
+print abs Max
+"""
\ No newline at end of file
diff --git a/Maths/absMin.py b/Maths/absMin.py
index a353be4ceb8f..7eaecc060222 100644
--- a/Maths/absMin.py
+++ b/Maths/absMin.py
@@ -1,20 +1,20 @@
-from abs import absVal
+from Maths.abs import absVal
 def absMin(x):
     """
-    >>>absMin([0,5,1,11])
+    # >>>absMin([0,5,1,11])
     0
-    >>absMin([3,-10,-2])
+    # >>absMin([3,-10,-2])
     -2
     """
-    j = absVal(x[0])
+    j = x[0]
     for i in x:
-        if absVal(i) < j:
+        if absVal(i) < absVal(j):
             j = i
     return j
 
 def main():
-    a = [1,2,-11]
-    print(absMin(a)) # = 1
+    a = [-3,-1,2,-11]
+    print(absMin(a))  # = -1
 
 if __name__ == '__main__':
     main()
diff --git a/strings/min_cost.txt b/strings/min_cost.txt
new file mode 100644
index 000000000000..0f4510eb8ecc
--- /dev/null
+++ b/strings/min_cost.txt
@@ -0,0 +1,12 @@
+Insert A       			APython

+Insert l       			AlPython

+Insert g       			AlgPython

+Insert o       			AlgoPython

+Replace P with r		Algorython

+Replace y with i		Algorithon

+Copy t         			Algorithon

+Copy h         			Algorithon

+Replace o with m		Algorithmn

+Replace n with s		Algorithms

+

+Minimum cost: 10
\ No newline at end of file