Please use the Markov Chain theory to solve this question, thank you!

3.52 The board for a modified Snakes and Ladder game is shown in Figure 3.18. The game is played with a tetrahedron (four-faced) die. (a) Find the expected length of the game. (b) Assume that the player is on square 6. Find the probability that they will find themselves on square 3 before finishing the game. 9 6 Figure 3.18