I. Calculation by Hands

Find the answers of the following expressions.
Show your steps.

1. 1 + 2 + 3 + ... + 100
2. 1 + 3 + 5 + ... + 89
3. 1 + 2 + 22 + 23 + ... + 210

II. Python Program

Write a for loop to calculate the sum of the sequence from 1 to
the number user entered.

Run your program and debug your mistakes until it is correct.

Send your source code (.py file) to Canvas.

III. Python Program Two

Write a for loop to calculate the sum of the odd numbers from 1 to
the number user entered.

You must find how many terms of the odd numbers to add together
before you write a loop.

Run your program and debug your mistakes until it is correct.

Send your source code (.py file) to Canvas.