Predict the output of generator

Question

is there a possible Way to 'predict' the output of a random generator based on some data already generated ?!

Answer 1

Yes if the random generator uses PRNG algorithm. You just have to get all the numbers in its full period. But that is a lot of numbers.

Answer 2

The easiest way is to look at the documentation of the code itself. The algorithm used should be mentioned there.
If not, you would have to analyze the code itself.

Answer 3

and how.do I know if the random generator uses prng algo?