Guest

The no of ways of arranging 15 student loans a1 a2 upto a15 in a row such that neither A2 nor A3 be seated before A1is

The no of ways of arranging 15 student loans a1 a2 upto a15 in a row such that neither A2 nor A3 be seated before A1is

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

Total arrangement methods 15!
Now find total arrangements in which a1 or a2 are seated before a1

subtract the answer obtained from total arrangements

Regards

Think You Can Provide A Better Answer ?

ASK QUESTION

Get your questions answered by the expert for free