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 Define winning strategy (Posted on 2013-11-14)
Two players A and B play the following game:
Start with the set S of the first 25 natural numbers: S={1,2,…,25}.
Player A first picks an even number x0 and removes it from S:
We have S:=S−x0.
Then they take turns (starting with B) picking a number xn∈S which is either divisible by xn-1 or divides xn-1 and removing it from S.

The player who can not find a number in S which is a multiple of the previous number or is divisible by it loses.

Which player has the winning strategy and what is it?

Source: someone sent it by Email.

 No Solution Yet Submitted by Ady TZIDON No Rating

 Subject Author Date re: How to win. Ady TZIDON 2013-11-16 06:39:14 re: It's complicated, Ady TZIDON 2013-11-16 02:39:18 It's complicated Jer 2013-11-15 16:09:10 within the constraints Charlie 2013-11-15 09:47:57 re: How to win. Charlie 2013-11-15 09:41:54 How to win. Jer 2013-11-15 09:08:43

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