@professionalbronco No worries about the bump! Super glad to see you learning so much, and even coming back to correct an old post 🙂
You're absolutely right, these sums don't converge, so you can't manipulate them as if they were actual equations. In fact, \(1+2+3+4+...=-\frac{1}{12}\) is just really misleading in general. While \(-\frac{1}{12}\) is related to it, it's not really "equal" to it in the normal sense.
@aaronhma Haha...I believe there is no rain-dropping sound in Module 1, but you will hear them in Module 3, which is the only Module I knew that has that effect.
When you multiply 11 by something, it basically equals to \(\text{that number} \times 10 + \text{that number}\).
So it is that number plus that number 'shifted' 1 place to left.
So if that number is 121, it would look something like this:
121
+121
So it is \(\text{(hundreds)} + \text{(tens + hundreds)} + \text{(ones + tens)} + \text{(ones)}\), which is the same as Pascal's triangle!
Then just clear up the mess and you get a number.