First, you must assign a unique identifier to each item. Then you can use a random number table or a computerized random number generator to select your random samples.

I need a once a year use random number generator for a local non-profit, so free would be nice.Very simple, around 100 numbers weighted in the same manner as the NBA Lottery (Team #1 gets 16 balls ...

Researchers propose a True Random Number Generation (TRNG) using dark pixel values of images received from the CMOS image sensor to provide unpredictability to the passwords.