I had this as a math problem for 7th grade. It is Compound Events and I forget how to do it. Thank you for anyone who takes the time to do it.

I had this as a math problem for 7th grade. It is Compound Events and I forget how to do it. Thank you for anyone who takes the time to do it.

Multiple Choice Selecting 1 sport drink and 1 water Not selecting a sport drink Selecting 2 sport drinks Selecting two bottles of water (A,B,C,D)

The topic is probability of compound Events.

For this problem, assume that Pr[A ∪B] = 0.6 and Pr[A] = 0.35. (1) What is Pr[B] if A and B are independent events? (2) What is Pr[B] if A and B are disjoint events?

You toss a coin 50 times and find that the outcome was heads 20 times and tails 30. What is the theoretical probability that the next toss will have an outcome of tails?