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In a math contest
The number of people who won the first and second prizes accounts for 1 of the total number, so the number of people who won the third prize is 2/3;

People who won the second and third prizes accounted for 8/9 of the total number, so those who won the first prize were1of the total number;

Then the second prize is 8/9 of the total number of winners MINUS 2/3 equals 2/9; It is 3 1 minus 9 1, which is also 9' s 2. Solution: The number of people who won the first and second prizes accounts for 1 of the total number.

So the third prize accounts for 2/3 of the total number.

Because the second and third prizes account for 8/9 of the total number of winners,

The second prize accounts for 8-2 of 9 = 2 of 9.