School group

There are 5 girls and 7 boys in the group. They sit in a row next to each other. How many options if no two girls sit next to each other.

Correct answer:

n =  1209600

Step-by-step explanation:

a=7 6 5 5 4 4 3 3 2 2 1 1=604800 b=7 5 6 4 5 3 4 2 3 1 2 1=604800  n=a+b=604800+604800=1209600



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