diff --git a/tests/results/10 b/tests/results/10
index cc8bdf8..d5f9028 100644
--- a/tests/results/10
+++ b/tests/results/10
@@ -1,6 +1,6 @@
 #  How do I copy a file in Python?
 #  
-#  shutil (http://docs.python.org/2/library/shutil.html) has many methods
+#  shutil (http://docs.python.org/3/library/shutil.html) has many methods
 #  you can use. One of which is:
 
 from shutil import copyfile
diff --git a/tests/results/15 b/tests/results/15
index 12fb820..bc1df86 100644
--- a/tests/results/15
+++ b/tests/results/15
@@ -296,7 +296,8 @@
 filled_dict.setdefault("five", 5)  # filled_dict["five"] is set to 5
 filled_dict.setdefault("five", 6)  # filled_dict["five"] is still 5
 
-# Sets store ... well sets (which are like lists but can contain no duplicates)
+# You can declare sets (which are like unordered lists that cannot contain
+# duplicate values) using the set object.
 empty_set = set()
 # Initialize a "set()" with a bunch of values
 some_set = set([1, 2, 2, 3, 4])  # some_set is now set([1, 2, 3, 4])
@@ -629,7 +630,7 @@
 # You can import modules
 import math
 
-print math.sqrt(16)  # => 4
+print math.sqrt(16)  # => 4.0
 
 # You can get specific functions from a module
 from math import ceil, floor
diff --git a/tests/results/2 b/tests/results/2
index c7b10dc..7b1f52f 100644
--- a/tests/results/2
+++ b/tests/results/2
@@ -1,24 +1,17 @@
-# 
-# ls
-# 
-# List directory contents.
-# 
-# List files one per line:
-  ls -1
-# 
-# List all files, including hidden files:
-  ls -a
-# 
-# Long format list (permissions, ownership, size and modification date) of all files:
-  ls -la
-# 
-# Long format list with size displayed using human readable units (KB, MB, GB):
-  ls -lh
-# 
-# Long format list sorted by size (descending):
-  ls -lS
-# 
-# Long format list of all files, sorted by modification date (oldest first):
-  ls -ltr
-# 
-# 
+# Displays everything in the target directory
+ls path/to/the/target/directory
+
+# Displays everything including hidden files
+ls -a
+
+# Displays all files, along with the size (with unit suffixes) and timestamp
+ls -lh 
+
+# Display files, sorted by size
+ls -S
+
+# Display directories only
+ls -d */
+
+# Display directories only, include hidden
+ls -d .*/ */
diff --git a/tests/results/21 b/tests/results/21
index 854cab3..47840a1 100644
--- a/tests/results/21
+++ b/tests/results/21
@@ -486,6 +486,7 @@
 // Hello world!
 // 43
 // [Function: myFunc]
+// true
 
 // To only consider properties attached to the object itself
 // and not its prototypes, use the `hasOwnProperty()` check.
diff --git a/tests/results/22 b/tests/results/22
index 854cab3..47840a1 100644
--- a/tests/results/22
+++ b/tests/results/22
@@ -486,6 +486,7 @@
 // Hello world!
 // 43
 // [Function: myFunc]
+// true
 
 // To only consider properties attached to the object itself
 // and not its prototypes, use the `hasOwnProperty()` check.
diff --git a/tests/results/3 b/tests/results/3
index 3d2f50a..41a116a 100644
--- a/tests/results/3
+++ b/tests/results/3
@@ -1,24 +1,17 @@
-# 
-# ls
-# 
-# List directory contents.
-# 
-# List files one per line:
-  ls -1
-# 
-# List all files, including hidden files:
-  ls -a
-# 
-# Long format list (permissions, ownership, size and modification date) of all files:
-  ls -la
-# 
-# Long format list with size displayed using human readable units (KB, MB, GB):
-  ls -lh
-# 
-# Long format list sorted by size (descending):
-  ls -lS
-# 
-# Long format list of all files, sorted by modification date (oldest first):
-  ls -ltr
-# 
-# 
+# Displays everything in the target directory
+ls path/to/the/target/directory
+
+# Displays everything including hidden files
+ls -a
+
+# Displays all files, along with the size (with unit suffixes) and timestamp
+ls -lh 
+
+# Display files, sorted by size
+ls -S
+
+# Display directories only
+ls -d */
+
+# Display directories only, include hidden
+ls -d .*/ */