I said: Every day, I write the letters of the alphabet on a piece of paper. Then using a kids' bingo game, I pull out a number to randomly assign to each letter. Then, I go through the racecard and add up the numerical value of the letters in each horse's name, divide the total in each name by the number of letters in each name and if there's a horse whose name is on its own as the 3rd highest number, I back that because 3 is my lucky number.
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Spoiler: