A 1 dollar bet is made in las vegas, if you roll two dice and it lands a 7 las vegas will pay you 5 dollars.
if you play twelve times What is the probability you'll win twice?
what is the probability that your first win will be on the fifth roll?
before the fifth roll?
if you play 12 times what is the probability you'll win 3 or more times?
if you play 120 times what is the portability of breaking even