diff --git a/Gcd.py b/Gcd.py
new file mode 100644
index 0000000..1ad80ed
--- /dev/null
+++ b/Gcd.py
@@ -0,0 +1,21 @@
+from math import gcd
+import math
+numbers = []
+n = int(input("how many numbers?:"))
+count=0
+while True:
+    count+=1
+    if count==n+1:
+        break
+    try:
+        number=int(input("enter numbers"))
+        numbers.append(int(number))
+    except ValueError:
+        print("Enter a valid number")
+        count-=1
+print(math.gcd(*numbers))
+
+
+
+
+
diff --git a/basic_import.py b/basic_import.py
new file mode 100644
index 0000000..d97f9f8
--- /dev/null
+++ b/basic_import.py
@@ -0,0 +1,4 @@
+import my_dice
+dice=my_dice.rollDice(int(input("Enter repetition number: ")))
+for i in range(len(dice)):
+    print("The probability of {} is {}%".format(i+1,dice[i]))
\ No newline at end of file
diff --git a/dice_percentage.py b/dice_percentage.py
new file mode 100644
index 0000000..27796b1
--- /dev/null
+++ b/dice_percentage.py
@@ -0,0 +1,28 @@
+import array as arr
+import random
+dice = arr.array('i',[0,0,0,0,0,0])
+count=0
+while True:
+    x= random.randint(1,6)
+    count+=1
+    if count== 5001:
+        break
+    elif x==1:
+        dice[0]+=1
+    elif x==2:
+        dice[1]+=1
+    elif x==3:
+        dice[2]+=1
+    elif x==4:
+        dice[3]+=1
+    elif x==5:
+        dice[4]+=1
+    elif x==6:
+        dice[5]+=1
+sum=dice[0]+dice[1]+dice[2]+dice[3]+dice[4]+dice[5]
+print("Percentage of throws of value 0:",(dice[0]/sum)*100)
+print("Percentage of throws of value 1:",(dice[1]/sum)*100)
+print('Percentage of throws of value 2:',(dice[2]/sum)*100)
+print("Percentage of throws of value 3:",(dice[3]/sum)*100)
+print("Percentage of throws of value 4:",(dice[4]/sum)*100)
+print("Percentage of throws of value 5:",(dice[5]/sum)*100)
\ No newline at end of file
diff --git a/my_dice.py b/my_dice.py
new file mode 100644
index 0000000..0e64300
--- /dev/null
+++ b/my_dice.py
@@ -0,0 +1,7 @@
+from random import randint
+def rollDice(number):
+    dice=[0]*6 #[0,0,0,0,0,0]
+    for i in range(number):
+        dice[randint(1,6)-1]+=1 #specify the index => [randint(1,6)-1]
+    dice=[round((dice[i]/number)*100,2) for i in range(len(dice))]
+    return dice
diff --git a/password.py b/password.py
new file mode 100644
index 0000000..78e8f0e
--- /dev/null
+++ b/password.py
@@ -0,0 +1,23 @@
+import re
+def password_validity():
+    password = input("enter a valid password")
+
+    charRegex = re.compile(r'(\w{6,16})') 
+    lowerRegex = re.compile(r'[a-z]+') 
+    upperRegex = re.compile(r'[A-Z]+')
+    digitRegex = re.compile(r'[0-9]+')
+    chaRegex = re.compile(r'[#@$]+')
+
+    if charRegex.findall(password)== []:
+        raise ValueError('The password must be between 6 and 16 characters.')
+    elif lowerRegex.findall(password)==[]:
+        raise ValueError('There should be lowercase letter.')
+    elif upperRegex.findall(password)==[]:
+        raise ValueError('There should be uppercase letter.')
+    elif digitRegex.findall(password)==[]:
+        raise ValueError('There should be at least one digit.')
+    elif chaRegex.findall(password)==[]:
+        raise ValueError('There should be at least one of the shown special symbols.')
+    else:
+        print('Valid password')
+password_validity()    
\ No newline at end of file