line 1: 1...9
line 2: 1...9
line3: 1...9
person A chooses 1 number from each line
person B chooses 1 number from each line(but whithout knowing what person A chose)
example:person A chose:7,6,9
person A chose:6,4,2
In order to win person B need to get exactly 1 number respectively that A chose.
example of a wining game:
Person A :4,5,8
Person B:2,5,6
example of a game without a win:
Person A :4,5,8
Person b :2,5,8
p(wining)=243/1000
if person B can choose more than 1 set of numbers(each set =3 numbers)
is it possible to make sure B will win the game with 5 diffrent sets of numbers?
if so,how?
and:give an example for sutch 5 sets.
p.s
243*5>1000 so in my opinion it's possible
2007-06-14
07:58:18
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2 answers
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asked by
Anonymous
in
Mathematics