Probability questions (shouldnt take long)
I generally know how the problems work, but while doing work I got stuck on these two. How do you set them up?
1) A coin is flipped three times and a die is rolled. Find the probability of tails showing twice and the die showing six
Now since its using "and", i'm pretty sure it wants me to multiply.
would this be right? (1/2 + 2/3)x(1/6)
2) Two dice are rolled. Find the probability that at least one die shows 3 or both dice show the same number.
it uses "or" so it wants to add..
so (1/6)+(1/6)+(2/12) - 2/12 ?
(with the 1/6's being the chance for 3 and the +2/12 the chance for same number and -2/12 being the chance for both)
If you can help, i'd very much appreciate it! thank you