How to play digital mine burying?

In a number range, there is a number that is a bomb, and whoever guesses the bomb will be punished. For example, the range is 1~99, the bomb is 60, and then a number is 30, so it is not a bomb, so now the range of guessing numbers is reduced to 30~ 100.

I guessed another number, 80, 80 is not a bomb, so now it is reduced to 30~80. I can't guess the value on the border every time until someone guesses the bomb, and then I will be punished.

Similar leagues include:

Paper cups transfer water.

Rules of the game: Choose 6 spectators as a group, and men and women cooperate alternately. Select 12 spectators and divide them into two groups to compete at the same time. Another two-person auxiliary group, the first person pours water into a paper cup, then passes it to the next person's paper cup one by one, and the last person pours the water from the paper cup into a glass. Finally, in the limited five minutes, whoever has the most water in the cup will win.