diff --git a/Python/program-5/README.md b/Python/program-5/README.md
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+Program 5
+
+Write a program to find a factorial of a number.
+
+Variable description--
+fact= Holds the input number
+
diff --git a/Python/program-5/factorial.py b/Python/program-5/factorial.py
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+fact=int(input("input any number"))
+# input any number
+factorial =1
+#predefined factorial of 0
+if fact<0:
+    print("factorial is not possible")
+elif fact==0:
+    print("factorial of "+str(fact) +" is "+str(factorial))
+else:
+    fact1=fact
+    while(fact>2):
+        fact-=1
+        fact1=fact1*(fact)
+    print("factorial is "+ str(fact1))
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