diff --git a/Least Common Multiple b/Least Common Multiple
new file mode 100644
index 0000000..99e7123
--- /dev/null
+++ b/Least Common Multiple	
@@ -0,0 +1,31 @@
+
+# least common multiple program
+
+import math
+
+print("Welcome to Least Common Multiple Program. Please enter 4 numbers")
+
+liste=[]
+n=1
+while n<5:
+    number=input("Enter the {}. number ".format(n))
+    try:
+        number=int(number)
+        if not number:
+            raise ValueError
+    except ValueError:
+        print("Please enter a valid number")
+        continue
+    n+=1
+    liste.append(number)
+gcd1=math.gcd(liste[0],liste[1])
+gcd2=math.gcd(liste[2],liste[3])
+lcm1=int((liste[0]*liste[1])/(gcd1))
+lcm2=int((liste[2]*liste[3])/(gcd2))
+gcdson=math.gcd(lcm1, lcm2)
+
+lcmson=(lcm1*lcm2)/(gcdson)
+
+print("LCM of {},{},{},{} is {}".format(liste[0],liste[1],liste[2],liste[3],int(lcmson)))
+
+    
diff --git a/Mis Calculator b/Mis Calculator
new file mode 100644
index 0000000..e821f24
--- /dev/null
+++ b/Mis Calculator	
@@ -0,0 +1,63 @@
+# 4- Mis Calculator
+
+"""
+==========Ayri Dosyalarda tanimlanan ve modul olarak yuklenen fonksiyonlar
+*add.py
+def add(a,b):
+    print(a+b)
+    
+*sub.py
+def sub(a,b):
+    print(a-b)
+    
+*mult.py
+def mult(a,b):
+    print(a*b)
+    
+*div.py
+def div(a,b):
+    print(a/b)
+==========Ayri Dosyalarda tanimlanan ve modul olarak yuklenen fonksiyonlar
+"""
+
+import math
+import add
+import sub
+import div
+import mult
+
+
+while True:
+    try:
+        a=float(input("Lutfen 1.sayiyi giriniz: "))
+        b=float(input("Lutfen 2.sayiyi giriniz: "))
+        a1=math.ceil(a)
+        b1=math.ceil(b)
+    except ValueError:
+        print("Oops, hata var. Lutfen sayi giriniz: \n")
+        continue
+    print("\nMenu: Seciminizi Yapinizi:  \n\n 1)Add\n 2)Subtract\n 3)Multiply\n 4)Divide\n")
+    operation=input("")
+    if operation=="Add":
+        add.add(a1,b1)
+    elif operation=="Subtract":
+        sub.sub(a1,b1)
+    elif operation=="Multiply":
+        mult.mult(a1,b1)
+    elif operation=="Divide":
+        try:
+            div.div(a1,b1)
+        except ZeroDivisionError:
+            print("Lutfen 0`dan farkli bir sayi giriniz: \n")
+            continue
+    else:
+        print("Lutfen yukarida belirtilen 4 islemden birini seciniz \n")
+        continue
+    a=input("Devam etmek icin tercih yapiniz YES or NO \n")
+    if a=="YES":
+        continue
+    elif a=="NO":
+        break
+    else:
+        print("Lutfen dogru secimi yapiniz \n")
+        a = input("Devam etmek icin tercih yapiniz YES or NO \n")
diff --git a/Number Guessing Game b/Number Guessing Game
new file mode 100644
index 0000000..d6b4bc4
--- /dev/null
+++ b/Number Guessing Game	
@@ -0,0 +1,36 @@
+#3.Number Guessing Game
+
+import random
+import time
+
+start = time.time()
+print("Sayi tahmin programina hosgeldiniz, Lutfen tahmin araligindaki sayilari seciniz")
+rng1=int(input("Lutfen tahmin araliginin ilk sayi: "))
+rng2=int(input("Lutfen tahmin araliginin ikinci sayi: "))
+a=random.randint(rng1+1,rng2-1)
+tahmin_sayisi=0
+while True:
+    try:
+        tahmin=int(input("{} ve {} arasindaki sayiyi tahmin ediniz: ".format(rng1,rng2)))
+        if tahmin==a:
+            print("{} sayisini dogru tahmin ettiniz, Tebrikler\n".format(a))
+            tahmin_sayisi+=1
+            break
+        elif tahmin>(rng2-1) or tahmin<(rng1+1):
+            print("Lutfen dogru aralikta bir tercih yapiniz")
+            continue
+        elif tahmin>a:
+            print("Cok yuksek \n")
+            tahmin_sayisi+=1
+            continue
+        elif tahmin<a:
+            print("Cok Dusuk \n")
+            tahmin_sayisi+=1
+            continue
+    except ValueError:
+        print("Lutfen yalnizca belirlenen aralikta sayi giriniz")
+        continue
+        
+end = time.time()
+
+print("{} sayisini {} denemede ve {} saniyede dogru tahmin ettiniz.".format(a,tahmin_sayisi,int(end - start)))
diff --git a/Password Generator b/Password Generator
new file mode 100644
index 0000000..7c568f1
--- /dev/null
+++ b/Password Generator	
@@ -0,0 +1,53 @@
+# 1- Random Password
+
+import tkinter as tk
+import random
+
+def sifre():
+#fonksiyon karakterlerin ascii kodlarini random olarak secip, daha sonra bunlari random olarak biraraya getirme uzerine kurulu
+    liste=[]
+    for i in range(10):
+        if i<2:
+            a=random.randrange(65,90)
+            liste.append(a)
+        elif 1<i<4:
+            b=random.randrange(48,57)
+            liste.append(b)
+
+        elif 3<i<6:
+            c=random.randrange(33,47)
+            liste.append(c)
+
+        elif 5<i<10:
+            d=random.randrange(33,122)
+            liste.append(d)
+    yeni_liste=[]
+    digits = [0,1,2,3,4,5,6,7,8,9]
+    for i in range(10):
+        n=random.choice(digits)
+        digits.remove(n)
+        yeni_liste.append(liste[n])
+
+    sifre=""
+    for i in range(10):
+        sifre+=chr(yeni_liste[i]) 
+    etiket = tk.Label(form, text=sifre, fg="black", bg="blue",font="Times 15 bold")
+    etiket.pack(fill=tk.X)
+
+form=tk.Tk()
+form.title("Random Password Generator")
+form.geometry("600x600+400+100")
+form.configure(bg="yellow")
+form.resizable(False,True)
+
+label=tk.Label(form,text="Random Password Generator",fg="red",font="Times 15 bold")
+label.pack()
+label1=tk.Label(form,text="Password will contain at least 2 upper case letter, 2 digits and 2 special symbols.",fg="red",font="Times 12 bold")
+label1.pack()
+
+buton=tk.Button(form,text="Click for a password", fg="red", font="Times 15 bold", command=sifre)
+buton.pack()
+
+form.state("normal")
+form.wm_attributes("-alpha",0.8)
+form.mainloop()