the first question asks if Alice always defects and Bob always defect what's Alice's score after 10 rounds. We can see that when they both defect each get one point so after 10 rounds they've each received 10 points.Now Alice always cooperate and Bob always defect. Alice always get 0 Bob always gets 5 and so the answer for Alice's score is 0 finally Alice always defect and Bob plays tit-for-tat okay let's write this out so let's write Alice a and Bob b and what's right with their moves are and what Alice's pay off its so on the first round Alice defects cuz she always defect Tit-for-tat always cooperates at the beginning at the very first move and so Alice's payoff here we look it up it's 5 on the next round Alice always defects and Bob is going to now do with Alice's state on the previous round which was defect and then they each get 1 and so on Bob goes into a mode always defect and if we count this up the first one is 5 and then there's 9 remaining rounds where Alice gets 1 and so it's nine plus five which is 14