diff --git a/notebooks/week-2.ipynb b/notebooks/week-2.ipynb
index fec7ba6..0c178b1 100644
--- a/notebooks/week-2.ipynb
+++ b/notebooks/week-2.ipynb
@@ -48,8 +48,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "A = np.random.randint(-100, 100, size=(4, 7));\n",
-    "\n",
     "X = ['a', 'b', 'c', 'd', 'e'];\n",
     "Y = [2, 3, 5, 7, 11, 13, 17];\n",
     "Z = ['α', 'β', 'γ', 'δ'];\n",
@@ -68,8 +66,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "A = np.random.randint(-100, 100, size=(4, 7));\n",
-    "\n",
     "X = randomset_alphabet(N=3);\n",
     "Y = randomset_integers(N=5);\n",
     "Z = randomset_greek(N=7);\n",