diff --git a/Problem Statement 1/README.md b/Problem Statement 1/README.md
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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/app.py b/Problem Statement 3/app.py
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--- /dev/null
+++ b/Problem Statement 3/app.py
@@ -0,0 +1,109 @@
+#github.com/atombalan
+
+#importing necessary modules
+import tkinter as tk
+import math
+from tkinter import *
+
+#Tkinter window setting with dimentions as 600*700
+window = Tk()
+window.geometry("650x700")
+window.title("PyCalc")
+icon = PhotoImage(file = "./calculator.png")
+window.iconphoto(True, icon)
+tk.Label(window, text="Python GUI Calculator with History", font=('Sans 18'), pady = 10).pack()
+tk.Label(window, text="github.com/atombalan", font=('Sans 10'), pady = 5).pack()
+
+
+#setting scrollbar for smooth UI
+scrollbar = Scrollbar(window)
+scrollbar.pack(side = RIGHT, fill = Y)
+expression = ""
+history = Text(window, wrap = None, yscrollcommand = scrollbar.set)
+scrollbar.config(command=history.yview)
+
+#USER INPUT FUNCTION
+def butttonClicked(item):
+ global expression
+ expression = expression + str(item)
+ inputText.set(expression)
+
+def butttonClearEntry():
+ global expression
+ expression = expression[:-1]
+ inputText.set(expression)
+
+#EVALUVATION OF EXPRESSION and STORING
+def butttonEqual():
+ global expression
+ try:
+ result = str(eval(expression))
+ inputText.set(result)
+ hist = str(expression) + " = " + result + "\n"
+ history.insert(END, hist)
+ except:
+ result = "Error!"
+ inputText.set(result)
+ hist = str(expression) + " = " + result + "\n"
+ history.insert(END, hist)
+ expression = ""
+
+#INPUT EXPRESSION
+inputText = StringVar()
+inputFrame = Frame(window, width = 312, height = 50, bd = 0, highlightbackground = "white", highlightcolor = "black", highlightthickness = 1)
+inputFrame.pack(side = TOP)
+inputField = Entry(inputFrame, font = ('Roboto', 18, 'bold'), textvariable = inputText, width = 50, bg = "#fff", bd = 0, justify = RIGHT)
+inputField.grid(row = 0, column = 0)
+inputField.pack(ipady = 10, pady = 3)
+
+#BUTTONS
+# frame for buttons
+buttonsFrame = Frame(window, width = 312, height = 272.5, bg = "white")
+buttonsFrame.pack()
+piValue = Button(buttonsFrame, text = "π", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.pi")).grid(row = 0, column = 0, padx = 3, pady = 3)
+factorial = Button(buttonsFrame, text = "x!", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.factorial(")).grid(row = 0, column = 1, padx = 3, pady = 3)
+bracket1 = Button(buttonsFrame, text = "(", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("(")).grid(row = 0, column = 2, padx = 3, pady = 3)
+bracket2 = Button(buttonsFrame, text = ")", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked(")")).grid(row = 0, column = 3, padx = 3, pady = 3)
+modulo = Button(buttonsFrame, text = "%", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("%")).grid(row = 0, column = 4, padx = 3, pady = 3)
+clearEntry = Button(buttonsFrame, text = "CE", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClearEntry()).grid(row = 0, column = 5, padx = 3, pady = 3)
+
+eValue = Button(buttonsFrame, text = "e", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.e")).grid(row = 1, column = 0, padx = 3, pady = 3)
+log = Button(buttonsFrame, text = "ln", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.log(")).grid(row = 1, column = 1, padx = 3, pady = 3)
+seven = Button(buttonsFrame, text = "7", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(7)).grid(row = 1, column = 2, padx = 3, pady = 3)
+eight = Button(buttonsFrame, text = "8", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(8)).grid(row = 1, column = 3, padx = 3, pady = 3)
+nine = Button(buttonsFrame, text = "9", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(9)).grid(row = 1, column = 4, padx = 3, pady = 3)
+divide = Button(buttonsFrame, text = "/", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("/")).grid(row = 1, column = 5, padx = 3, pady = 3)
+
+sine = Button(buttonsFrame, text = "sin", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.sin(")).grid(row = 2, column = 0, padx = 3, pady = 3)
+log10 = Button(buttonsFrame, text = "log", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.log10(")).grid(row = 2, column = 1, padx = 3, pady = 3)
+four = Button(buttonsFrame, text = "4", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(4)).grid(row = 2, column = 2, padx = 3, pady = 3)
+five = Button(buttonsFrame, text = "5", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(5)).grid(row = 2, column = 3, padx = 3, pady = 3)
+six = Button(buttonsFrame, text = "6", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(6)).grid(row = 2, column = 4, padx = 3, pady = 3)
+multiply = Button(buttonsFrame, text = "*", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("*")).grid(row = 2, column = 5, padx = 3, pady = 3)
+
+cosine = Button(buttonsFrame, text = "cos", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.cos(")).grid(row = 3, column = 0, padx = 3, pady = 3)
+squareroot = Button(buttonsFrame, text = "√", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.sqrt(")).grid(row = 3, column = 1, padx = 3, pady = 3)
+one = Button(buttonsFrame, text = "1", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(1)).grid(row = 3, column = 2, padx = 3, pady = 3)
+two = Button(buttonsFrame, text = "2", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(2)).grid(row = 3, column = 3, padx = 3, pady = 3)
+three = Button(buttonsFrame, text = "3", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(3)).grid(row = 3, column = 4, padx = 3, pady = 3)
+minus = Button(buttonsFrame, text = "-", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("-")).grid(row = 3, column = 5, padx = 3, pady = 3)
+
+tangent = Button(buttonsFrame, text = "tan", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("math.tan(")).grid(row = 4, column = 0, padx = 3, pady = 3)
+xPowery = Button(buttonsFrame, text = u"exp", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("**")).grid(row = 4, column = 1, padx = 3, pady = 3)
+zero = Button(buttonsFrame, text = "0", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(0)).grid(row = 4, column = 2, padx = 3, pady = 3)
+point = Button(buttonsFrame, text = ".", fg = "black", width = 10, height = 3, bd = 0, bg = "#f1f3f4", cursor = "hand2", command = lambda: butttonClicked(".")).grid(row = 4, column = 3, padx = 3, pady = 3)
+equals = Button(buttonsFrame, text = "=", fg = "white", width = 10, height = 3, bd = 0, bg = "#4285f4", cursor = "hand2", command = lambda: butttonEqual()).grid(row = 4, column = 4, padx = 3, pady = 3)
+plus = Button(buttonsFrame, text = "+", fg = "black", width = 10, height = 3, bd = 0, bg = "#dadce0", cursor = "hand2", command = lambda: butttonClicked("+")).grid(row = 4, column = 5, padx = 3, pady = 3)
+
+
+tk.Label(window, text="History:", font=('Sans'), pady = 10).pack()
+
+#HISTORY DISPLAY
+history.pack()
+
+#APP RUN LOOP
+window.mainloop()
+
+
+
+#github.com/atombalan
diff --git a/Problem Statement 3/calculator.png b/Problem Statement 3/calculator.png
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diff --git a/README.md b/README.md
index dd00367..1298aca 100644
--- a/README.md
+++ b/README.md
@@ -1,66 +1,8 @@
-# GAME OF CODES
+## PyCalc
+PyCalc is a Calculator with GUI made with tkinter and math libraries in python. Update python and run the app
-# 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)
-Unique Selling Point (10 points)
-Solving the Problem Statement (10 points)
-Presentation Skills - eg. Video (10 points)
-Applying GUI - eg. Browser using Django/Flask or Tkinter (10 points )
-
-
-***
-
-
-#### 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.
-Step 7.1: Fork the main repository
-Step 7.2: Delete the problem statement folders you are not working on
-Step 7.3: Upload the video of its working in the main folder and files in the problem statement folder
-Step 7.4: Send pull request to the repository
-***
diff --git a/demo image.png b/demo image.png
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