in how many ways can6 boys and 4 girls sit in s row so thst no boy is between 2 girls?

Since no boy should be there in between any 2 girls, consider the 4 girls as one unit.

HEnce total no of units=6+1=7

Now they Can be arranged in 7! ways and the girls can be arranged in 4! ways, the total no of arrangements is

7!*4!