Simulation and Modelling - Old Questions

What are the two main properties of random numbers? Test whether the 3rd, 7th, 11th, and so on numbers in the following random number sample are auto-correlated. (Zα = 0.05 and   ) 0.12  0.01  0.23  0.28  0.89  0.31  0.64  0.28  0.83  0.93  0.99  0.15  0.33  0.35  0.91  0.41  0.60  0.27  0.75  0.88  0.68  0.49  0.05  0.43  0.95  0.58  0.19  0.36  0.69  0.87