why did he multiply n-1C1 by f(n-1)
Please explain couple case
@bhavyac888_4c41066a0fcdb581 from rest of n-1 friends u need to select any 1 and for all of them u can pair this person
why did he multiply n-1C1 by f(n-1)
@bhavyac888_4c41066a0fcdb581 from rest of n-1 friends u need to select any 1 and for all of them u can pair this person