3 files changed, 48 insertions, 0 deletions
diff --git a/comp/work/28/1.py b/comp/work/28/1.py
new file mode 100644
index 0000000..5c8598c
--- /dev/null
+++ b/comp/work/28/1.py
@@ -0,0 +1,26 @@
+def addative(num):
+    if len(num) >= 2:
+        new = 0
+        for i in num:
+            new = new + int(i)
+        return 1 + addative(str(new))
+    else:
+        return 0
+
+
+def multiplative(num):
+    if len(num) >= 2:
+        new = 1 
+        for i in num:
+            new = new * int(i)
+        return 1 + addative(str(new))
+    else:
+        return 0
+
+
+num = input("number: ")
+
+if input("m/a: ") == "m":
+    print(multiplative(str(num)))
+else:
+    print(addative(str(num)))
diff --git a/comp/work/28/2.py b/comp/work/28/2.py
new file mode 100644
index 0000000..5e344e4
--- /dev/null
+++ b/comp/work/28/2.py
@@ -0,0 +1,10 @@
+def gcf(num1, num2):
+    while num1 != num2:
+        if (num1 > num2):
+            num1 = num1 - num2
+        else:
+            num2 = num2 - num1
+    return num1
+
+
+print(gcf(10, 20))
diff --git a/comp/work/28/3.py b/comp/work/28/3.py
new file mode 100644
index 0000000..c72e328
--- /dev/null
+++ b/comp/work/28/3.py
@@ -0,0 +1,12 @@
+number = 0
+while number < 1 or number > 10:
+    number = input("enter a postive number: ")
+    if number > 10:
+        print("number is too big")
+    else:
+        if number < 1:
+            print("not posative")
+c = 1
+for k in range(number-1):
+    print(c)
+    c = (c * number - 1 - k) / (k + 1)