Asked by Irene

Claudia is arranging seating for her sorority's fall banquet. he has to sit 7 seniors, 5 juniors, 9 sophomores and 3 freshmen at the head banquet table. if members of the same class must sit together, in how ways can she do this?

2x7!7!x 2x5!5! x2x9!9! x 2x3!3!
50803200 x 28800 x 2.634x10^11 x 72= 2.775x10^25
It this correct?