Fifth Friday of the Month

When they checked their schedules, several busy women found the only time they could schedule for their book club was the fifth Friday of the month.  Not every month has a fifth Friday, but they weren't concerned, since they'd need the extra time to read the books anyway.

  1. On average, how often will the book club meet each year?

  2. What is the shortest time between meetings?

  3. What is the longest time between meetings?

Source: Original.

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