1. Write a python program to input marks of five subjects Physics, Chemistry, Biology,
Mathematics and Computer. Calculate percentage and grade according to following:
Percentage >= 90% : Grade A
Percentage >= 80% : Grade B
Percentage >= 70% : Grade C
Percentage >= 60% : Grade D
Percentage >= 40% : Grade E
Percentage < 40% : Grade F

2. Write a Python program to input basic salary of an employee and calculate its Gross salary
according to following:
Basic Salary <= 10000 : HRA = 20%, DA = 80%
Basic Salary <= 20000 : HRA = 25%, DA = 90%
Basic Salary > 20000 : HRA = 30%, DA = 95%

3.Write a Python program to input electricity unit charges and calculate total electricity bill
according to the given condition:
For first 50 units Rs. 0.50/unit
For next 100 units Rs. 0.75/unit
For next 100 units Rs. 1.20/unit
For unit above 250 Rs. 1.50/unit
An additional surcharge of 20% is added to the bill

4.Write a python program to check whether a number is Armstrong number or not.

5.Write a python program to check whether a number is Palindrome number or not.

6.Write a program to calculate variance and standard deviation for the given data:
[33,44,55,67,54,22,33,44,56,78,21,31,43,90,21,33,44,55,87]

7. Consider the following data of a clothes store and plot the data on the line chart:

8.Write a program to represent the data on the ratings of mobile games on bar
chart. The sample data is given as: Pubg, FreeFire, MineCraft, GTA-V, Call of
duty, FIFA 22. The rating for each game is as: 4.5,4.8,4.7,4.6,4.1,4.3.

9.Do the following tasks in OpenCV.
a. Load an image and Give the title of the image
b. Change the colour of image and Change the image to grayscale
c. Print the shape of image
d. Display the maximum and minimum pixels of image
e. Crop the image and extract the part of an image
f. Save the Image

10. Observe the given data for monthly sales of one of the salesmen for 6 months. Plot them on the line chart.