Question 1193588
**1. Group Books by Author:**

* Since the books by Jonas Jonasson must be together, we can treat them as a single unit. 
* So, we now have 5 units to arrange: 
    * "The 100-Year-Old Man..." & "The Girl Who Saved the King of Sweden" (grouped)
    * "Crazy Rich Asians"
    * "Confessions of a Shopaholic"
    * "The Kite Runner"
    * "The Kite Runner"

**2. Permutations of the Grouped Units:**

* There are 5! (5 factorial) ways to arrange these 5 units. 
* 5! = 5 * 4 * 3 * 2 * 1 = 120 ways

**3. Arrangements within the Author Group:**

* The two books by Jonas Jonasson can be arranged among themselves in 2! (2 factorial) ways.
* 2! = 2 * 1 = 2 ways

**4. Total Arrangements:**

* Total Arrangements = Permutations of Grouped Units * Arrangements within Author Group
* Total Arrangements = 120 * 2 = 240 ways

**Therefore, there are 240 different ways to arrange the books if the books written by Jonas Jonasson must be together.**