Current location - Trademark Inquiry Complete Network - Trademark inquiry - The "Treasure Box" interactive link in the "Lucky 52" column of CCTV is a guessing game. The rules of the game are as follows: among the 20 trademarks, 5
The "Treasure Box" interactive link in the "Lucky 52" column of CCTV is a guessing game. The rules of the game are as follows: among the 20 trademarks, 5
Because 5 of the 20 trademarks won, and both flipped over, they both won, so there are 18 left, and 3 of them will win. Therefore, the probability of this spectator winning the third flip is 3 18 = 1 6．