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diff --git a/challenge-003/paulo-custodio/python/ch-1.py b/challenge-003/paulo-custodio/python/ch-1.py
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+++ b/challenge-003/paulo-custodio/python/ch-1.py
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+#!/usr/bin/env python
+
+# Challenge 003
+#
+# Challenge #1
+# Create a script to generate 5-smooth numbers, whose prime divisors are less
+# or equal to 5. They are also called Hamming/Regular/Ugly numbers. For more
+# information, please check this wikipedia.
+
+import sys
+
+# return an iterator to generate the sequence
+# the sequence is a merge of all multiples of 2, 3 and 5
+def hamming_gen():
+    seq = [[1], [1], [1]]
+    base = [2, 3, 5]
+
+    while True:
+        # get the smallest of the multiples
+        n = min(seq[0][0], seq[1][0], seq[2][0])
+
+        for i in range(0, 3):
+            # shift used multiples
+            if seq[i][0] == n:
+                seq[i].pop(0)
+
+            # push next multiple
+            seq[i].append(n*base[i])
+
+        yield n
+
+
+# main
+iter = hamming_gen()
+for i in range(0, int(sys.argv[1])):
+    print(next(iter))
diff --git a/challenge-003/paulo-custodio/python/ch-2.py b/challenge-003/paulo-custodio/python/ch-2.py
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+++ b/challenge-003/paulo-custodio/python/ch-2.py
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+#!/usr/bin/env python
+
+# Challenge 003
+#
+# Challenge #2
+# Create a script that generates Pascal Triangle. Accept number of rows from
+# the command line. The Pascal Triangle should have at least 3 rows. For more
+# information about Pascal Triangle, check this wikipedia page.
+
+import sys
+
+def draw_pascal(rows):
+    data = [1]
+    for row in range(1,rows+1):
+        # print current row
+        print(" "*(rows-row) + " ".join([str(x) for x in data]))
+
+        # compute next row
+        nxt = [1]
+        for col in range(0, len(data)-1):
+            nxt.append(data[col] + data[col+1])
+        nxt.append(1)
+        data = nxt
+
+# main
+draw_pascal(int(sys.argv[1]))