diff --git a/Problem Statement 1/README.md b/Problem Statement 1/README.md
deleted file mode 100644
index 6aaeab6..0000000
--- a/Problem Statement 1/README.md	
+++ /dev/null
@@ -1,10 +0,0 @@
-# Problem Statement-1.
-
-
-***
-### Make a desktop assistant using Python as its backend
-
-
-
-***
-
diff --git a/Problem Statement 2/README.md b/Problem Statement 2/README.md
deleted file mode 100644
index baf2489..0000000
--- a/Problem Statement 2/README.md	
+++ /dev/null
@@ -1,10 +0,0 @@
-# Problem Statement-2.
-
-
-***
-### Make a Simple Image Editing app 
-
-
-
-***
-
diff --git a/Problem Statement 3/README.md b/Problem Statement 3/README.md
index b4683b3..9b74730 100644
--- a/Problem Statement 3/README.md	
+++ b/Problem Statement 3/README.md	
@@ -1,10 +1 @@
-# Problem Statement-3.
-
-
-***
-### Make a calculator with GUI
-
-
-
-***
-
+# calcalutor in python for GOC Hack2skill
diff --git a/Problem Statement 3/calculator.py b/Problem Statement 3/calculator.py
new file mode 100644
index 0000000..8511a17
--- /dev/null
+++ b/Problem Statement 3/calculator.py	
@@ -0,0 +1,95 @@
+import sys
+import math
+## Imported math library to run sin(), cos(), tan() and other such functions in the calculator
+
+
+
+
+def calc(term):
+    """
+        input: term of type str
+        output: returns the result of the computed term.
+        purpose: This function is the actual calculator and the heart of the application
+    """
+
+    # This part is for reading and converting arithmetic terms.
+    term = term.replace(' ', '')
+    term = term.replace('^', '**')
+    term = term.replace('=', '')
+    term = term.replace('?', '')
+    term = term.replace('%', '/100.00')
+    term = term.replace('rad', 'radians')
+    term = term.replace('mod', '%')
+    term = term.replace('aval', 'abs')
+
+    functions = ['sin', 'cos', 'tan', 'pow', 'cosh', 'sinh', 'tanh', 'sqrt', 'pi', 'radians', 'e']
+
+    # This part is for reading and converting function expressions.
+    term = term.lower()
+
+    for func in functions:
+        if func in term:
+            withmath = 'math.' + func
+            term = term.replace(func, withmath)
+
+    try:
+
+        # here goes the actual evaluating.
+         term = eval(term)
+
+    # here goes to the error cases.
+    except ZeroDivisionError:
+
+        print("Can't divide by 0.  Please try again.")
+
+    except NameError:
+
+        print('Invalid input.  Please try again')
+
+    except AttributeError:
+
+        print('Please check usage method and try again.')
+    except TypeError:
+        print("please enter inputs of correct datatype ")
+
+    except Exception:
+        print("Wrong operator")
+
+    return term
+
+
+def result(term):
+    """
+        input:  term of type str
+        output: none
+        purpose: passes the argument to the function calc(...) and
+                prints the result onto console.
+    """
+    print("\n" + str(calc(term)))
+
+
+def main():
+    """
+        main-program
+        purpose: handles user input and prints
+                 information to the console.
+    """
+
+
+    if sys.version_info.major >= 3:
+        while True:
+            k = input("\nWhat is ")
+            if k == 'quit':
+                break
+            result(k)
+
+    else:
+        while True:
+            k = raw_input("\nWhat is ")
+            if k == 'quit':
+                break
+            result(k)
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/README.md b/README.md
deleted file mode 100644
index dd00367..0000000
--- a/README.md
+++ /dev/null
@@ -1,66 +0,0 @@
-# GAME OF CODES
-
-
-
-# How to Register in GAME OF CODES
-
-#### Step1: Register yourself in our website
-
-[Hack2skill Website](https://hack2skill.com/hack/goc3) 
-
-#### Step2: Join our discord server
-
-[Hack2skill Discord Server](https://discord.gg/2acmdTsKeR)
-
-#### Step3: Follow our github organization
-
-[Hack2skill GitHub Organization](https://github.com/hack2skill)
-
-#### Step4: Read the guidelines
-***
-
-## Guidelines for the participants:
-
-1. Participant should register for the competition in our website.
-2. Should join our discord server.
-3. Participants can participate individually only.
-4. Please refrain from discussing strategy during the contest.
-5. Do not share your code during the contest.
-6. Plagiarism of any means will lead to disqualification.
-7. All submissions will run through a plagiarism detector before deciding the winners.Any case of code plagiarism will disqualify both users from the contest & their scores would be set to null for the particular contest.
-8. The decisions of the panel will be final and binding in all forms.
-
-#### Step5: Read the Score Criteria :
-
-
-### Important Note:
-
-Primary Shortlisting would be based on the video, hence try to make the video of good quality.
-
-## Score Criteria:
-
-Scores are given out of 100 based on :
-
-Creativity of the Project (10 points) <br />
-Unique Selling Point (10 points) <br />
-Solving the Problem Statement (10 points) <br />
-Presentation Skills - eg. Video (10 points) <br />
-Applying GUI - eg. Browser using Django/Flask or Tkinter (10 points ) <br />
-
-
-***
-
-
-#### Step6: Be active in our discord server
-
-# Project Submission:
-#### Step7: Compete with others by making a PR in our repository
-
-Participants have to make a video (screen recording) of the workings of their project.
-
-They need to upload the project code to the Github. <br />
-Step 7.1: Fork the main repository <br/>
-Step 7.2: Delete the problem statement folders you are not working on <br/>
-Step 7.3: Upload the video of its working in the main folder and files in the problem statement folder <br/>
-Step 7.4: Send pull request to the repository <br/>
-***