diff --git a/1.1.py b/1.1.py
new file mode 100644
index 0000000..089dc57
--- /dev/null
+++ b/1.1.py
@@ -0,0 +1,4 @@
+sayi= input('tam sayi giriniz')
+def int_return():
+   return sayi
+print(int_return())    
\ No newline at end of file
diff --git a/1.2.py b/1.2.py
new file mode 100644
index 0000000..b6fd202
--- /dev/null
+++ b/1.2.py
@@ -0,0 +1,4 @@
+def add(sayi=int(input('tam sayi giriniz'))):
+  sayi = sayi+2
+  return sayi
+print(add())    
\ No newline at end of file
diff --git a/1.3.py b/1.3.py
new file mode 100644
index 0000000..6480a57
--- /dev/null
+++ b/1.3.py
@@ -0,0 +1,4 @@
+
+def greet(name=input('isim giriniz'),msg='Good morning'):
+   print('Hello', name + ' ' + msg)
+greet()
\ No newline at end of file
diff --git a/1.4.py b/1.4.py
new file mode 100644
index 0000000..29ac8dc
--- /dev/null
+++ b/1.4.py
@@ -0,0 +1,6 @@
+liste=int(input('sayi giriniz'))
+def toplam(*liste):
+    sum=0
+    for n in liste:
+       sum=sum+n
+print(toplam(liste))  
\ No newline at end of file
diff --git a/1.5.py b/1.5.py
new file mode 100644
index 0000000..01f8b32
--- /dev/null
+++ b/1.5.py
@@ -0,0 +1,8 @@
+num=int(input('sayilari girin'))
+liste=num.split(' ')
+def adder(liste):
+    if len(liste)>=5:
+        return ('Besten uzun')
+    elif len(liste)<5:
+        return('Besten az')   
+adder(liste) 
\ No newline at end of file
diff --git a/1.6.py b/1.6.py
new file mode 100644
index 0000000..5626fa1
--- /dev/null
+++ b/1.6.py
@@ -0,0 +1,12 @@
+def divide(a = int(input("deger giriniz: "))):
+    result = int(a/2)
+    return result
+
+print('sonuc', divide())   
+
+def divided_with_sum(b=int(input('deger verin'))):
+    result2=divided(b)+6
+    return result2
+
+print('sonuc',divided_with_sum())    
+
diff --git a/2.py b/2.py
new file mode 100644
index 0000000..0794ac5
--- /dev/null
+++ b/2.py
@@ -0,0 +1,12 @@
+def computepay(hour,rate):
+    if hour > 40:
+        payment = 1.5 * rate * (hour - 40) + (40 *rate)
+    else:
+        payment = hour * rate
+    return payment
+    
+hours = float(input("Enter Hours:"))
+rates = float(input("Enter rate per hour:"))
+
+
+print('Aldiginiz para miktari', computepay(hours,rates) )
\ No newline at end of file
diff --git a/3.1.py b/3.1.py
new file mode 100644
index 0000000..33e2b58
--- /dev/null
+++ b/3.1.py
@@ -0,0 +1,5 @@
+def hacim_hesapla(r=int(input('yaricap giriniz'))):
+    pi=3.14
+    hesap=((4 / 3) * pi * (r ** 3))
+    return hesap
+print(hacim_hesapla())
\ No newline at end of file
diff --git a/3.2.py b/3.2.py
new file mode 100644
index 0000000..8625b7e
--- /dev/null
+++ b/3.2.py
@@ -0,0 +1,5 @@
+def main():
+    r= 3
+    cal=((4 / 3) * 3 * (r ** 3))
+    return cal
+print("volume: ", main())
\ No newline at end of file
diff --git a/3.3.py b/3.3.py
new file mode 100644
index 0000000..43cbc5b
--- /dev/null
+++ b/3.3.py
@@ -0,0 +1,18 @@
+def sphere():
+
+
+    def sphere_area(r=int(input('Alan icin yaricap giriniz: '))):
+        pi=3.14
+        hesap1=(pi * (r ** 2))
+        return hesap1
+    def sphere_volume(r=int(input('Hacim icin yaricap giriniz: '))):
+        pi=3.14
+        hesap2=((4 / 3) * pi * (r ** 3))
+        return hesap2
+
+    print('alan: ', sphere_area())
+    print('hacim: ', sphere_volume())
+
+print(sphere())
+
+
diff --git a/3.4.py b/3.4.py
new file mode 100644
index 0000000..e8ac6b4
--- /dev/null
+++ b/3.4.py
@@ -0,0 +1,21 @@
+"""def sum_of_numbers(a,b):
+    result=0
+    if a<=b:
+        result=a+ sum_of_numbers(a+1,b)
+    return result
+print(sum_of_numbers(1,4))"""
+
+"""def input_function(a=int(input("Please entere a number")),b=int(input("Please enter a number "))):
+    if a<b:
+        return sum_of_numbers(a,b)
+    if a>=b:
+        return sum_of_numbers(b,a)
+print(input_function())"""
+
+myList=[2,4,5,78,8]
+def sum_of_numbers(x):
+    result=0
+    for i in x:
+        result+=i
+    return result
+print(sum_of_numbers(myList))
\ No newline at end of file