Minimal number of successful communication

[mathmari]

Hey!

I got stuck with the following exercise:

There are three armies A,B,C. Between the armies A and B there is a mountain. Only A and B together can beat the army C. A and B can only comminicate with a pigeon. But it is not sure that the pigeon gets to the other side of the mountain.
Which is the minimal number of times where the pigeon gets to the other side of the mountain??

Could you give me some hints what I am supposed t do?? (Wondering)

 

[I like Serena]

Hey!

I got stuck with the following exercise:

There are three armies A,B,C. Between the armies A and B there is a mountain. Only A and B together can beat the army C. A and B can only comminicate with a pigeon. But it is not sure that the pigeon gets to the other side of the mountain.
Which is the minimal number of times where the pigeon gets to the other side of the mountain??

Could you give me some hints what I am supposed t do?? (Wondering)

Hi! (Smile)

Before either A or B attacks they will both want to know for sure if and when the other attacks.
So A must have confirmation that B received his message.

Let's say that A starts by sending a pigeon to B, saying that A will attack tomorrow at noon, but only if he gets confirmation from B, that he will also attack at the same time. (Thinking)

How does this story continue? (Wondering)