A study on the order of drawing lots for speeches

Solution: (1) Suppose that "at least one of the performance serial numbers of A and B is odd", then? The performance serial numbers of A and B are even numbers. It is derived from the probability calculation formula of equal possibility events.

......................, 4 points.

(2) The possible values are

Zazie Hoko

? ? ..........................., eight.

Therefore, the distribution list is

1

2

three

four

five

.............. 10 point

So, 12 points.

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