Question 4 |7 Marksl 4. A tourist starts at the point 0 on the map shown in Figure below. She first chooses a path at random and follows it to point A1, A2, or A3. From that point, she chooses a new path at random and follows it to one of the points 8;,i = 1' 2. . ..,8. Es O 4.1. Find the probability that the tourist arrives at point B3. [4] 4.2. If the tourist is known to have reached at point 33, what is probability that the tourist followed A2 path? [3]