# Question

In Example 8b, let

Show that Y1, . . . ,Yk, Yk+1 are exchangeable. Yk+1 is the number of balls one must observe to obtain a special ball if one considers the balls in their reverse order of withdrawal.

Show that Y1, . . . ,Yk, Yk+1 are exchangeable. Yk+1 is the number of balls one must observe to obtain a special ball if one considers the balls in their reverse order of withdrawal.

## Answer to relevant Questions

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