diff --git a/Quizzes/quiz01.md b/Quizzes/quiz01.md
index 382bccc..96b0e3f 100644
--- a/Quizzes/quiz01.md
+++ b/Quizzes/quiz01.md
@@ -2,12 +2,12 @@
 
 **In Python 3, the maximum value for an integer is 263 - 1:**
 
-1. [ ] False
+1. [ X ] False
 1. [ ] True
 
 **How would you express the hexadecimal value a5 as a base-16 integer constant in Python?**
 
-1. [ ] 0xa5
+1. [X ] 0xa5
 1. [ ] a5x0 
 1. [ ] 00xa5
 1. [ ] 0xaa
@@ -15,10 +15,10 @@
 
 **Which of the following are valid ways to specify the string literal blue'car in Python:**
 
-1. [ ] """blue'car"""
+1. [X ] """blue'car"""
 1. [ ] 'blue''car'
-1. [ ] 'blue\'car'
-1. [ ] "blue'car"
+1. [ X] 'blue\'car'
+1. [ X] "blue'car"
 1. [ ] 'blue'car'
 
 **Which of the following is the correct output?**
@@ -30,12 +30,12 @@ print(r'blue\\car\nwindow')
 1. [ ] blue\car\nwindow
 1. [ ] blue\\carwindow
 1. [ ] blue\car window
-1. [ ] blue\\car\nwindow
+1. [X ] blue\\car\nwindow
 
 **Which of the following is not a Python built-in function:**
 
 1. [ ] round()
 1. [ ] repr()
-1. [ ] diff()
+1. [X ] diff()
 1. [ ] map()
 1. [ ] isinstance()
diff --git a/Quizzes/quiz02.md b/Quizzes/quiz02.md
index 3ae7b5e..8fcbfbe 100644
--- a/Quizzes/quiz02.md
+++ b/Quizzes/quiz02.md
@@ -9,7 +9,7 @@ print(sum(xs))
 ```
 
 1. [ ] It's impossible to know.
-1. [ ] 13
+1. [ X ] 13
 1. [ ] Something else.
 
 **In the Python statement x = a + 5 - b:**
@@ -17,7 +17,7 @@ print(sum(xs))
 - a and b are ________
 - a + 5 - b is ________
 
-1. [ ] operands, an expression
+1. [ X ] operands, an expression
 1. [ ] terms, a group
 1. [ ] operands, an equation
 1. [ ] operators, a statement
@@ -25,12 +25,12 @@ print(sum(xs))
 **What is the value of the expression 100 / 25?
 
 1. [ ] 4
-1. [ ] 4.0
+1. [ X ] 4.0
 
 **You should use the == operator to determine whether objects of type float are equal.**
 
 1. [ ] True
-1. [ ] False
+1. [ X ] False
 
 ```python
 1.1 + 2.2 == 3.3
@@ -44,7 +44,7 @@ y = (x < 100.0) and isinstance(x, float)
 ```
 
 1. [ ] None
-1. [ ] True
+1. [ X ] True
 1. [ ] Correct
 1. [ ] 1
 1. [ ] 0
@@ -52,7 +52,7 @@ y = (x < 100.0) and isinstance(x, float)
 
 **Which of the following are truthy:**
 
-1. [ ] 0.000001
+1. [X ] 0.000001
 1. [ ] 0
 1. [ ] []
 1. [ ] True
@@ -67,7 +67,7 @@ b = 200
 ```
 
 1. [ ] 0
-1. [ ] 200
+1. [ X ] 200
 1. [ ] 100
 1. [ ] False
 1. [ ] True
@@ -80,11 +80,11 @@ from math import sqrt
 x > 0 and sqrt(x)
 ```
 1. [ ] Yes
-1. [ ] No
+1. [ X ] No
 
 **Which of the following operators has the lowest precedence?**
 
-1. [ ] and
+1. [ X ] and
 1. [ ] not
 1. [ ] %
 1. [ ] +
@@ -92,7 +92,7 @@ x > 0 and sqrt(x)
 
 **What is the value of the expression 1 + 2 ** 3 * 4?**
 
-1. [ ] 33
+1. [ X  ] 33
 1. [ ] 36
 1. [ ] 108
 1. [ ] 4097
@@ -106,13 +106,13 @@ x *= 5
 x = x * 5
 ```
 
-1. [ ] True
+1. [ X ] True ** considering that both statements are not used in the same program one after the other else the first x returns 500, the second one returns 2500. The statements are equivalent one or the other can be used
 1. [ ] False
 
 **The Python Enhancement Proposal (PEP) that enumerates stylistic guidelines for Python code is:**
 
 1. [ ] PEP 8000
-1. [ ] PEP 8
+1. [ X ] PEP 8
 1. [ ] PEP 257
 1. [ ] PEP 20
 
@@ -126,16 +126,16 @@ x, y = 1, 2
 print(x, y, z)
 ```
 1. [ ] True
-1. [ ] False
+1. [ X ] False
 
 **Variables must be declared before they are assigned a value.**
 
 1. [ ] True
-1. [ ] False
+1. [ X ] False
 
 **Variables may be assigned a value of one type, and after be assigned a value of a different type.**
 
-1. [ ] True
+1. [ X ] True
 1. [ ] False
 
 **How many objects and how many references are created by this program?**
@@ -145,12 +145,12 @@ y = x
 
 1. [ ] One object, one reference
 1. [ ] Two objects, one reference
-1. [ ] Two objects, two references
-1. [ ] One object, two references
+1. [ X ] Two objects, two references
+1. [  ] One object, two references
 
 **PEP8 recommend which of the following styles for multi-word variable names:**
 
 1. [ ] customerFirstName (Camel Case)
 1. [ ] CustomerFirstName (Pascal Case)
-1. [ ] customer_first_name (Snake Case)
+1. [ X ] customer_first_name (Snake Case)
 1. [ ] customer-first-name (Kebab Case)
\ No newline at end of file
diff --git a/my_labs_solution/lab3_sol.py b/my_labs_solution/lab3_sol.py
new file mode 100755
index 0000000..dac6e98
--- /dev/null
+++ b/my_labs_solution/lab3_sol.py
@@ -0,0 +1,71 @@
+
+def add(fnum, snum):
+  try:
+    result = float(fnum) + float(snum)
+  except Exception as e:
+    result = 'N/A'
+    print(e)
+    print('something went wrong')
+  finally:
+    return result
+
+def sub(fnum, snum):
+  try:
+    result = float(fnum) - float(snum)
+  except Exception as e:
+    result = 'N/A'
+    print(e)
+    print('something went wrong')
+  finally:
+    return result
+
+def mul(fnum, snum):
+  try:
+    result = float(fnum) * float(snum)
+  except Exception as e:
+    result = 'N/A'
+    print(e)
+    print('something went wrong')
+  finally:
+    return result
+
+def div(fnum, snum):
+  try:
+    result = float(fnum)/float(snum)
+  except ZeroDivisionError as e:
+    result = 'N/A'
+    print(e)
+    print('snum cannot be zero for operation "/"')
+  except Exception as ex:
+    result = 'N/A'
+    print(ex)
+    print('something went wrong')
+  finally:
+    return result
+  
+
+def calculate(operation, fnum, snum):
+  if(operation in ('+', '-', '*', '/')):
+    if(operation == '+'):
+      return add(fnum, snum)
+    elif (operation == '-'):
+      return sub(fnum, snum)
+    elif (operation == '*'):
+      return mul(fnum, snum)
+    else:
+      return div(fnum, snum)
+  else:
+    print(f'Operation not supported, {operation}\nOperations supported are : +, -, *, /')
+
+def main():
+    #get the operation
+    operation = input("Please enter Operation: ")
+    #get the input params
+    fnum = input("Please enter First Num: ")
+    snum = input("Please enter the Second Num: ")
+    #calculate
+    result = calculate(operation, fnum, snum)
+    print(f'Result: {result}')
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/my_labs_solution/lab_4_calc.py b/my_labs_solution/lab_4_calc.py
new file mode 100755
index 0000000..713f859
--- /dev/null
+++ b/my_labs_solution/lab_4_calc.py
@@ -0,0 +1,142 @@
+
+
+def add(fnum, snum):
+  return fnum + snum
+
+def sub(fnum, snum):
+  return fnum - snum
+
+def mul(fnum, snum):
+  return fnum * snum
+
+def div(fnum, snum):
+  try:
+    result = fnum/snum
+  except ZeroDivisionError as e:
+    result = 'N/A'
+    print(e)
+    print('snum cannot be zero for operation "/"')
+  finally:
+    return result
+  
+
+def arithm_calc(operation, fnum, snum):
+  if(operation in ('+', '-', '*', '/')):
+    if(operation == '+'):
+      return add(fnum, snum)
+    elif (operation == '-'):
+      return sub(fnum, snum)
+    elif (operation == '*'):
+      return mul(fnum, snum)
+    else:
+      return div(fnum, snum)
+  else:
+    print(f'Operation not supported, {operation}\nOperations supported are : +, -, *, /')
+
+def list_attr_calc(list_1, list_2):
+  result = {}
+  list_1.sort()
+  list_2.sort()
+  result['list_1'] = {'min_value' : list_1[0], 'max_value' : list_1[-1], 'len' : len(list_1)}
+  result['list_2'] = {'min_value' : list_2[0], 'max_value' : list_2[-1], 'len' : len(list_2)}
+  return result
+
+def list_sort_calc(list_1, list_2):
+  result = []
+  result.extend(list_1)
+  result.extend(list_2)
+  result.sort()
+  return result
+
+def set_calc(operation, list_1, list_2):
+  if operation in ('Union', 'Difference', 'Intersect'):
+    result = set()
+    s1 = {*list_1}
+    s2 = {*list_2}
+    if(operation == 'Union'):
+      result = s1.union(s2)
+    elif(operation == 'Difference'):
+      result = s1.difference(s2)
+    else:
+      result = s1.intersection(s2)
+    return result
+  else:
+    print(f'Operation not supported, {operation}\nOperation supported are : [Union, Difference, Intersect]')
+
+def check_value(num):
+  try:
+    val = float(num)
+  except Exception as e:
+    print(e)
+    print("num is not numeric")
+  finally:
+    return val
+
+def check_list(l):
+  for i in range(len(l)):
+    l[i] = check_value(l[i])
+  return l
+
+def get_inputs_for_arithm():
+  operation = input("Please enter Operation: ")
+  #get the input params
+  fnum = input("Please enter First Num: ")
+  fnum = check_value(fnum)
+  snum = input("Please enter the Second Num: ")
+  snum = check_value(snum)
+
+  input_dict = {}
+  input_dict['operation'] = operation
+  input_dict['fnum'] = fnum
+  input_dict['snum'] = snum
+  return input_dict
+
+def get_inputs_for_list():
+  st_list_1 = input("Please enter List1 in following format: 1,2,3,4,5: ")
+  list_1 = st_list_1.split(',')
+  list_1 = check_list(list_1)
+  st_list_2 = input("Please enter List2 in following format: 1,2,3,4,5: ")
+  list_2 = st_list_2.split(',')
+  list_2 = check_list(list_2)
+  input_dict = {}
+  input_dict['list1'] = list_1
+  input_dict['list2'] = list_2
+  return input_dict
+
+def get_inputs_for_set():
+  operation = input("Please enter operation performed on set -> [Union, Difference, Intersect]: ")
+  st_list_1 = input("Please enter List1 in following format: 1,2,3,4,5: ")
+  list_1 = st_list_1.split(',')
+  list_1 = check_list(list_1)
+  st_list_2 = input("Please enter List2 in following format: 1,2,3,4,5: ")
+  list_2 = st_list_2.split(',')
+  list_2 = check_list(list_2)
+  input_dict = {}
+  input_dict['operation'] = operation
+  input_dict['list1'] = list_1
+  input_dict['list2'] = list_2
+  return input_dict
+
+
+def main():
+    #get the operation
+    mode = input("Please enter one of the following Modes[SET, ARITHM, LISTATTR, LISTSORT]: ")
+    if(mode == 'SET'):
+      input_dict = get_inputs_for_set()
+      result = set_calc(input_dict['operation'], input_dict['list1'], input_dict['list2'])
+    elif(mode == 'ARITHM'):
+      input_dict = get_inputs_for_arithm()
+      result = arithm_calc(input_dict['operation'], input_dict['fnum'], input_dict['snum'])
+    elif(mode == 'LISTATTR'):
+      input_dict = get_inputs_for_list()
+      result = list_attr_calc(input_dict['list1'], input_dict['list2'])
+    elif(mode == 'LISTSORT'):
+      input_dict = get_inputs_for_list()
+      result = list_sort_calc(input_dict['list1'], input_dict['list2'])
+    else:
+      print(f'Mode not supported, {mode}\nModes supported are : [SET, ARITHM, LISTATTR, LISTSORT]')
+
+    print(f'Result: {result}')
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/my_labs_solution/simple_calculator.py b/my_labs_solution/simple_calculator.py
new file mode 100755
index 0000000..8d5ba03
--- /dev/null
+++ b/my_labs_solution/simple_calculator.py
@@ -0,0 +1,10 @@
+#importing math lib to get the value of pi
+import math
+
+#get the radius from the user, convert to float as radius can be anything
+radius = float(input("Please Provide the Radius of the Circle: "))
+
+#calculate the circumference with 2*pi*r
+Circumference = 2 * math.pi * radius
+
+print(Circumference)
\ No newline at end of file