Question

n!/(n-3)!= 8.n!/(n-2)!​

Answer 1

n!/(n-3)!= 8.n!/(n-2)! ===> :(n!)

1/(n-3)!= 8/(n-2)!

1/(n-3)!= 8/(n-2).(n-3)! ==> ×(n-3)!

1 = 8/(n-2)

n-2 = 8

n = 10