How do I go about proving this identity?
#Help
dusky slate
peak pond
use the hint to get COMBIN(n-1, k)
dusky slate
use the hint to get COMBIN(n-1, k)
I still don't get it
peak pond
write it out. do the algebra.
hint: (n-k)(n-k-1)! = (n-k)!
dusky slate
write it out. do the algebra.
hint: (n-k)(n-k-1)! = (n-k)!
Thank you u got it now
elder heart
.solved