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Grade: 12

                        

Find the number of ways in which 5 boys and 5 girls be seated in a row so that all the girls are never together.

5 years ago

Answers : (2)

noogler
489 Points
							
4!.5!
5 years ago
Meet Singhal
11 Points
							
  1. You can permute the boys in = 5! ways, then you are left with 6 positions to place the girl.
  2. Place the girls in 6C5 ways
  3. Then permute the girls in 5! ways
So your answer is the multiplication of these 3 terms which is = 5! x 6C5 x 5! = 5! x 6!
 
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5 years ago
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