Mark, tom, and travis fit in the backseat of the car. if they enter the car in a random order, what is the probability that mark will be in the middle?

a 1/3
b 1/6
c 1/2
d 2/9

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.

Will give a: 122 b: 90 c: 48 d: 180

Use the squared identities to simplify sin^2x cos^2x