diff --git a/chapter1/ex1.1.py b/chapter1/ex1.1.py
new file mode 100644
index 0000000..613ddd8
--- /dev/null
+++ b/chapter1/ex1.1.py
@@ -0,0 +1,7 @@
+import math
+
+num_steps = int(math.log2(128))
+print(
+    f"A binary search would take maximum {num_steps} steps "
+    "to search a list of 128 items."
+)
diff --git a/chapter1/ex1.2.py b/chapter1/ex1.2.py
new file mode 100644
index 0000000..aa80532
--- /dev/null
+++ b/chapter1/ex1.2.py
@@ -0,0 +1,7 @@
+import math
+
+num_steps = int(math.log2(128*2))
+print(
+    f"A binary search would take maximum {num_steps} steps "
+    "to search a list of 256 items."
+)