Is the world going nuts ? What happened to mathematics ? The magical world of infinite series …
Well, here is a clue:

Think of 1 – 1 + 1 – 1 + 1 + … = 1/2
And of 1 – 2 + 3 – 4 + 5 + … = 1/4

But don’t take my word for it. There is a nice little clip …

>> Go to Source Clip