diff --git a/alphabetical_order.py b/alphabetical_order.py
new file mode 100644
index 0000000..6935593
--- /dev/null
+++ b/alphabetical_order.py
@@ -0,0 +1,8 @@
+#alphabetical order 
+def alphabetical():
+    words=input("Enter some words and add hyphen between them: ") #I wanted to ask from user to enter some words with hyphen
+    source=[n for n in words.split('-')]  #I defined a source list and it is equal all of the words with hyphen
+    source.sort() #I sorted the list with an alphabetical order
+    print('-'.join(source))# I wrote to the screen a print which added hyphen
+
+alphabetical()
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diff --git a/equal_reverse.py b/equal_reverse.py
new file mode 100644
index 0000000..11e3867
--- /dev/null
+++ b/equal_reverse.py
@@ -0,0 +1,10 @@
+#equal deverse
+def equal_devers(*args): #I defined a function with args
+    words=[] #I opened a new empty list
+    for i in args: #I wanted to look all elements 
+        if i==i[::-1]: #If their reverse is equal to them
+            words.append(True) #If it is equal I added True to the words list
+        else:
+            words.append(False) # If it is not equal I added False to the words list
+    return words #I wanted to return words list from the function
+print(equal_devers("madam","tacocat","utrecht"))
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diff --git a/perfect_number.py b/perfect_number.py
new file mode 100644
index 0000000..67672da
--- /dev/null
+++ b/perfect_number.py
@@ -0,0 +1,12 @@
+#perfect numbers
+from functools import reduce # I called the reduce from functools
+def perfect_number(n):
+    sum = 0  # I defined sum and it is equal to 0
+    for x in range(1, n): #I returned the function to the number that user enter it. 
+        if n % x == 0: #if the remainder of the division is equal 0
+            sum += x  #add x to the sum
+    return sum == n  #return it if sum equal to n which is entered by the user.
+new_list=list(filter(perfect_number,range(1,1000))) #I defined a new list and it is equal to a new list which is filter by the function
+sum=reduce(lambda a,b: a+b,new_list)#sum is equal to a number which is the sum of perfect numbers
+print (new_list)
+print(sum)
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diff --git a/reading_number.py b/reading_number.py
new file mode 100644
index 0000000..e8c5fb2
--- /dev/null
+++ b/reading_number.py
@@ -0,0 +1,13 @@
+#reading numbers
+def reading_numbers(): # I defined a fuction
+    x=int(input("Please a number with two digits: ")) #I wanted to ask from user to enter a number with two digits
+    list=["ten","eleven","twalf","thirteen","fourteen","fifteen","sixteen","seventeen","ëighteen","nineteen"] # I defined three lists
+    first_digit=["","one","two","three","four","five","six","seven","eight","nine"]
+    second_digit=["","","twenty","thirty","fourty","fifty","sixty","seventy","eighty","ninety"]
+    first=x%10 #I defined first is equal the first digit of the number
+    second=x//10 # I defined second is equal to the second digit of the number
+    if 10<=x<20: # if the number equal to ten or small than twenty 
+        print(list[first]) # I wanted to print to the elememt of the list which is order in the first position
+    else:
+        print(second_digit[second],first_digit[first])# if it is others the reading of the number equal to second postion of the secondigit list
+reading_numbers()                                     #and first position of the firstdigit list
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diff --git a/unique_list.py b/unique_list.py
new file mode 100644
index 0000000..0d62fbc
--- /dev/null
+++ b/unique_list.py
@@ -0,0 +1,8 @@
+#unique list
+def unique_list(*args): #I defined a function with args
+    new_list=[] # I opened a new list
+    for i in args: #For every lements in args
+        if i not in new_list: #I wanted to search if this element is not in args
+            new_list.append(i) #if the element doesn't exist in new list I add with the append properties
+    return new_list # I wanted to take this new list from the function
+print(unique_list(1,2,3,3,4,4,6,6,4,5,5))
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