A: (1) It's unfair. Because the probability of drawing the white ball is higher (0.6) and the probability of drawing the yellow ball is lower (0.4), under this game rule, the probability of B scoring is higher.

(2) rules of the game; 1; In pairs, take turns to touch the ball from your pocket, one at a time, and then put it back. 2; If you touch the yellow ball, you get 3 points, if you touch the white ball, you get 2 points.

This is fair, because the expected value of each A is 0.4*3= 1.2.

The expected value of point B is 0.6*2= 1.2.

Two people get the same score every time.