diff --git a/Rolldice.py b/Rolldice.py
new file mode 100644
index 0000000..74eebbc
--- /dev/null
+++ b/Rolldice.py
@@ -0,0 +1,25 @@
+#dice percentage
+import random
+
+def percent(number):
+    dice=[0,0,0,0,0,0]# I created an array with 6 elements named dice and I filled this array with the value zero.
+    n=5000
+    for i in range(n):
+        number=random.randint(1,6)# It will generate a random number with a value between 1 and 6 in a repetition 5000 times.
+        if number==1:#If the value is 1, increase the element 0 in the array by 1
+            dice[0]+=1
+        elif number==2:#It is the same for each numbers
+            dice[1]+=1
+        elif number==3:
+            dice[2]+=1
+        elif number==4:
+            dice[3]+=1
+        elif number==5:
+            dice[4]+=1
+        else:
+            dice[5]+=1
+    percentage=dice[number-1]/n*100 #At the end of the repetition i calculated percentages with 2 decimal places.
+    return percentage # I wanted to return percentage
+    
+
+print("Percentage of throws of value","4","=",percent(4),"%") #I wrote it to the screen
diff --git a/gcd1.py b/gcd1.py
new file mode 100644
index 0000000..707040c
--- /dev/null
+++ b/gcd1.py
@@ -0,0 +1,23 @@
+# a program which can calculate the greatest common divisor (GCD) of my inputs.
+import math
+def gcd():
+    count=int(input("How many numbers do you want to enter: "))#I asked the number of the enters
+    numbers=[] #I opened a new list with the name numbers.
+    
+    a=0
+    while a<count:#it is going to turn until this formula
+        try: #I used try/except blocks to verify input entries and warn the user for Nan or non numerical inputs.
+            new=int(input("please enter new number"))
+        except Exception:
+            print("Please do not enter Nan or non numerical numbers.")
+        else:
+            numbers.append(new)
+            a+=1
+
+    gcdr=math.gcd(numbers[0],numbers[1])#i tried to find gcd in numbers list for first two elements with gcd module. its name is gcdr
+    for i in range(2,len(numbers)):#then I started from third element in numbers list and i turned it with each elements.
+        gcdreal=int(math.gcd(gcdr,numbers[i]))#every turn it is going to be change.
+    
+    return gcdreal #then i want to return gcdreal for the gcd numbers in numbers list
+
+print("gcd is: ",gcd())
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diff --git a/main.py b/main.py
new file mode 100644
index 0000000..f78b48c
--- /dev/null
+++ b/main.py
@@ -0,0 +1,6 @@
+#basic import 2
+import Rolldice #Then I created a new module called main.py 
+
+number=int(input("Enter repetition number: ")) #and i got an input from the user using "Enter repetition number:
+
+print("The probability of",number,"is",Rolldice.percent(number)) #I wrote it to the screen.
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diff --git a/my_dice.py b/my_dice.py
new file mode 100644
index 0000000..b3fda1c
--- /dev/null
+++ b/my_dice.py
@@ -0,0 +1,6 @@
+#basic import
+from Rolldice import percent # I called my (percent) function in Rooldice module.
+
+n=input("How many times do you want to roll: ") #instead of 5000, I asked how many times do you want to roll
+
+print(percent(4)) #I wrote only percentage to the screen.
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diff --git a/password1.py b/password1.py
new file mode 100644
index 0000000..e9ccbc7
--- /dev/null
+++ b/password1.py
@@ -0,0 +1,25 @@
+#Python program to check the validity of a password (input from users)
+import re
+p= input("Input your password")
+x = True
+while x:  
+    if (len(p)<6 or len(p)>12): #I asked all of the requirements
+        raise ValueError("The length of the password is not valid")#If there is a not valid enter,it will raise a error in each situation.
+        break
+    elif not re.search("[a-z]",p):
+        raise ValueError("There is no lower case in your password")
+        break
+    elif not re.search("[0-9]",p):
+        raise ValueError("There is no number in your password")
+        break
+    elif not re.search("[A-Z]",p):
+        raise ValueError("There is not a upper case in your password")
+        break
+    elif not re.search("[$#@]",p):
+        raise ValueError("There is not a special character in your password")
+        break
+   
+    else:
+        print("Valid Password")#If all of the possibilities are true, it will write valid password to the screen.
+        x=False
+        break
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