18. A mixed strategy is a. equal to the value of the game b. given as a set of probabilities for each player c. telling that the alternative strategies must be combined d. calculated as the expected value of a player 19. How many value(s) of the game in a problem of game theory? a. One. b. Two, one for the row player, another for the column player. 20. Which is correct in describing an "equilibrium mixed strategy"? a. It is the best mixed strategy for either of the players. b. No player can benefit from unilaterally leaving it. c. Both a and b. 21. To find out the equilibrium mixed strategy, we use computer software QM a. True b. False 22. Which state is known as "equilibrium" in general? a. It is not stable. b. It is balanced, but if it is somehow off balance, it cannot come back to balance by itself. c. It is balanced, and if it is somehow off balance, it can come back to balance by itself. 23. Given any mixed strategy in a zero-sum game, a. it is always true that expected gain of row player = expected loss of column player. b. it is always true that expected gain of row player expected loss of column player c. it is always true that expected gain of row player 5 expected loss of column player. d. None of above, 24. What is the consequence for a player to unilaterally leave the equilibrium strategy? a. He can be better off, if he is lucky. b. He can never be better off. c. If his change is noticed by the other player, he can be beat easily. d. Both b and c. 25. If a player stays with the equilibrium strategy, then he will not be hurt by whatever strategy the other player takes. a. True b. False