Random number generation is the generation of a sequence of numbers or symbols that cannot be reasonably predicted better than by a random chance, usually through a hardware random-number generator (RNG).So basically its a fixed number of draws you should do to get something and that its not reasonably predicted .

So you need an X number of draws each event to get the grand prize,,,which is different for everyone and that you could never know.

De facto rng = a way to emulate luck by a machine

So pretty much it really is impossible to tell whether i could pull something out of those lucky wheels or *es huh...

If I was you i'd avoid spending into RNG events only ones that will guarantee you power and ninjas because I've tried wheel of fortune and the chances of getting Konohamaru frags and shisui are really low.