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In a sports competition in which several tests are carried out, only the three athletes

A, B, C

. In each event, the winner receives

x

points, the second receives

y

points, and the third receives

z

points. There are no ties, and the numbers

x, y, z

are distinct positive integers with

x

greater than

y

, and

y

greater than

z

. At the end of the competition it turns out that

A

has accumulated

20

points,

B

has accumulated

10

points and

C

has accumulated

9

points. We know that athlete

A

was second in the 100-meter event. Determine which of the three athletes he was second in the jumping event.

Problem Statement