diff --git a/assignment_1.py b/assignment_1.py
new file mode 100644
index 0000000..07aba77
--- /dev/null
+++ b/assignment_1.py
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+# I.
+# Write a Python program to check the validity of a password (input from users)
+# Rules :
+# At least 1 letter between [a-z] and 1 letter between [A-Z]
+# At least 1 number between [0-9].
+# At least 1 character from [$#@].
+# Minimum length 6 characters.
+# Maximum length 16 characters.
+# If password is not valid throw ValueError with a proper error message for each rule.
+# If the password is valid print a success message. Use some from raise, except, assert, else and finally keywords.
+
+import re
+import time
+
+while True:
+    
+    try:
+        your_password=input("Enter your password: ")
+        
+        if not re.search("[a-z]", your_password):
+            raise ValueError
+        
+        elif not re.search("[A-Z]", your_password):
+            raise ValueError
+       
+        elif not re.search("[0-9]", your_password):
+            raise ValueError
+        
+        elif not re.search("[$#@]", your_password):
+            raise ValueError
+        
+        elif len(your_password)<6:
+            raise ValueError
+        
+        elif len(your_password)>16:
+            raise ValueError
+        
+    except ValueError:
+        time.sleep(1.0)
+        print("""Please check your password again. 
+        At least one password contains: 
+        one lowercase, one uppercase, one number
+        one character($#@)
+        min 6 digits max 16 digits!!!""")
+        
+    
+    else:
+        print("Your password is valid!!!")
+        
+    finally:
+        print("""Executing Finally...""")
+        break
+     
+
+
+    
+
diff --git a/assignment_2.py b/assignment_2.py
new file mode 100644
index 0000000..5731564
--- /dev/null
+++ b/assignment_2.py
@@ -0,0 +1,23 @@
+import random
+# II. 
+# Create an array with 6 elements named dice. Fill this array with the value zero.
+# Generate a random number with a value between 1 and 6 (just like a dice) in a repetition 5000 times.
+# If the value is 1, increase the element 0 in the array by 1, the same applies to the values 2, 3, 4, 5 and 6.
+# The dice[0] element indicates the number of times value 1 has occurred.
+# Or in general: dice[x-1] indicates the number of times that x has been thrown
+# At the end of the repetition, print the contents of the array as percentages with 2 decimal places. For example;
+# "Percentage of throws of value 3 = 16.28%"
+
+
+
+# dice=[0]*6
+
+# for i in range(5000):
+#     random_number = random.randrange(1,7)
+#     dice[random_number-1]+=1
+
+# for i in range(6):
+#     print("Percentage of throws of value {} = {:.2f}%".format(i+1,(dice[i]/5000)*100))
+
+
+print(range(6))
\ No newline at end of file
diff --git a/assignment_4.py b/assignment_4.py
new file mode 100644
index 0000000..efb9817
--- /dev/null
+++ b/assignment_4.py
@@ -0,0 +1,61 @@
+import math
+# As a user, I want to use a program which can calculate the greatest common divisor (GCD) of my inputs.
+
+# Acceptance Criteria:
+
+# Ask user the enter the number of inputs (n).
+# Ask user to enter n input numbers one by one.
+# Use try/except blocks to verify input entries and warn the user for Nan or non numerical inputs.
+# Calculate the greatest common divisor (GCD) of n numbers.
+# Use gcd function in module of math.
+lst=[]
+n = int(input("Enter the number of repetitions you want to enter: "))
+for i in range(n):
+    try: 
+        inputs =int(input("Enter the inputs one by one: "))
+        
+        if n>2:
+            raise SystemError
+
+        elif inputs == 1:
+            raise KeyError
+            
+        
+        elif inputs != int(inputs):
+            raise ValueError
+
+        elif inputs<0:
+            raise RecursionError
+        
+    except SystemError:
+        print("""
+        You tried to enter more than 2 inputs!!!
+        Please try to enter less n!
+        """)
+    except KeyError:
+        print("Input you entered must be bigger than 1!!!")
+        
+
+    except ValueError:
+        print("input you entered is not an integer!!!")
+
+    except RecursionError:
+        print("Opps! Input you entered is negative!!!")
+        
+
+    else:
+        lst.append(inputs)
+
+    finally:
+        print("Next one!")
+
+result = math.gcd(lst[0],lst[1])
+
+if result == 1:
+    print("""    GCD can not be 1
+    Please give the new values!
+    """)
+    
+else:
+    print("The greatest common divisor of",lst[0],"and",lst[1],"is",result)
+    
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..dc901a0
--- /dev/null
+++ b/main.py
@@ -0,0 +1,10 @@
+
+
+
+
+
+from my_dice import rollDice
+
+number=int(input("Enter repetition number: "))
+
+print(rollDice(number))
diff --git a/my_dice.py b/my_dice.py
new file mode 100644
index 0000000..bd3f056
--- /dev/null
+++ b/my_dice.py
@@ -0,0 +1,11 @@
+import random
+def rollDice(number):
+
+    dice=[0]*6
+    for i in range(number):
+        random_number = random.randrange(1,7)
+        dice[random_number-1]+=1
+        
+
+    for i in range(6):
+        return "The probability of {} = {:.2f}%".format(i+1,(dice[i]/number)*100)