Fill in the blank
the explains why a x b = b and a + b = b + a.
the answers could be: absolute value, associative property, commutative property, distribution property, integers, and rational number

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.