Number System
In how many different ways can 7 boys and 3 girls sit in a row such that all the three girls do not sit together ?

3286880
3186880
3086880
3386880

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Number System
There are seven boys and four girls in a row. In how many ways can they be seated in the row so that all the girls do not sit together ?

11! - 7! x 4!
11! - 8! x 4!
10! - 7! x 3!
11! - 8! x 3!

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