Write a pseudo code + Draw Flowchart that calculates the average of 3 numbers.

Sure, here is the pseudo code for calculating the average of 3 numbers:

1. Start
2. Declare variables num1, num2, num3, and average.
3. Read values for num1, num2, num3.
4. Calculate average = (num1 + num2 + num3) / 3.
5. Print average.
6. End

And here is a simple description of the flowchart:

1. Start
2. Declare variables (num1, num2, num3, average)
3. Input num1
4. Input num2
5. Input num3
6. Calculate average = (num1 + num2 + num3) / 3
7. Output average
8. End

Unfortunately, I can't draw a flowchart here, but you can easily create one based on the steps above using any flowchart software or even on paper. The flowchart would start with a Start symbol, then follow the steps in the pseudo code, each step being a rectangle (process) or parallelogram (input/output), and finally end with an End symbol. The arrows would show the flow of the process.