China Naming Network - Weather knowledge - (2005? Taizhou) As shown in the figure, one of the three red hearts is randomly selected, and the probability of extracting "Red Heart 7" is 13 13.

(2005? Taizhou) As shown in the figure, one of the three red hearts is randomly selected, and the probability of extracting "Red Heart 7" is 13 13.

P (red heart) = 13.

So the answer to this question is: 13.