diff --git a/My-solutions/100 python exercises - ex14.py b/My-solutions/100 python exercises - ex14.py
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+# Question 14
+# Level 2
+# 
+# Question:
+# Write a program that accepts a sentence
+# and calculate the number of upper case letters and lower case letters.
+
+# Suppose the following input is supplied to the program:
+# Hello world!
+# Then, the output should be:
+# UPPER CASE 1
+# LOWER CASE 9
+
+import re
+
+test_string = "Hello World! WORLD And whatever the hell that MEANS"
+
+split = ''.join(re.split(r'\W+', test_string))
+
+upper = 0
+lower = 0
+
+for p in split:
+    if p.isupper():
+        upper += 1
+    elif p.islower():
+        lower += 1
+
+
+print upper
+print lower
diff --git a/My-solutions/100 python exercises - ex15.py b/My-solutions/100 python exercises - ex15.py
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+# Question 15
+# Level 2
+# 
+# Question:
+# Write a program that computes the value of a+aa+aaa+aaaa
+# with a given digit as the value of a.
+
+# Suppose the following input is supplied to the program:
+# 9
+# Then, the output should be:
+# 11106
+# 
+
+# Function: (taking the assignment a bit further!)
+#	1 - Ask a digit
+#	2 - Ask how many time it should be added (2--> a + aa / 4--> a + aa + aaa + aaaa)
+
+# Ask the user a digit, and how many times it should be repeated then added to the other repetitions
+
+def conv(digit, repeats):
+        start = range(1,repeats+1)
+        sequence = []
+        count = 0
+        for p in start: # Create a list of integers of the digit repeated p times 
+                sequence.append(int(str(digit) * p))
+        for p in sequence: # Add the resulting values
+               count = count + p
+        return count
+
+digit = int(raw_input("digit? "))
+repeats = int(raw_input("repeats? "))
+
+print conv(digit,repeats)
+
+# Book's Solution:
+# a = raw_input()
+# n1 = int( "%s" % a )
+# n2 = int( "%s%s" % (a,a) )
+# n3 = int( "%s%s%s" % (a,a,a) )
+# n4 = int( "%s%s%s%s" % (a,a,a,a) )
+# print n1+n2+n3+n4