Question

A teacher wanted to arrange a group of male and female students in the first grade of primary school in a class so that neither two male boys would sit side by side nor any two female neighbors. And I calculated the number of ways that students can be arranged within this arrangement. After that, a new individual joined the class and the teacher calculated the number of ways that students can be arranged again in the same previous method. After adding this new individual to the class, I found that the number of methods by which all class members can be arranged increased by 200%. Calculate how much it was Number of class members before adding the new individual
.
Note: An individual here means a male or female student without identification
The number of class members means the total number of male and female students in the class

Answer 1

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