50g: an interesting RAND anomaly

[Claudio L.]

I'm no expert in RNG but as far as I understand, the properties of the generated number don't necessarily apply to individual bits.
By properties I mean bias, distribution, and recurrence period. Since an algorithm manipulates each bit differently, you are not supposed to isolate individual bits.
It seems you found that the last 3 bits (hard to define bits on a decimal number, but bear with me) have no bias and good uniform distribution (you got a nice 50/50/50/50), but have a short period, and you even happened to find out what that period is.

Using a different nibble will give you different properties, not necessarily any better.