Question 829816
a. What is the probability of tossing 3 heads in 4 coins tossed ?
   probability = {{{(matrix(2,1,4,3))(1/2)^4 = highlight(1/4)}}} 


b. Given that the first toss is a Head, what is the probability of tossing 3 heads in 4 coins tossed ?
  probability = {{{(matrix(2,1,3,2))(1/2)^3 = highlight(3/8)}}}

c. Show how the multiplication rule for probability holds ?
If A and B are independent events, then P(A ∩ B) = P(A)×P(B).