Permutations

Maths & Stats

How is (n-2)! =2 and (n+2-3)! = (n-1)! Please show me with explanation how to open up factorial

Chris Topher

CA Foundation

★ 5

05-Oct-21 20:00

543

Answers (4)

First equation is incorrect Second 2-3=-1

CA Suraj Lakhotia

Admin

05-Oct-21 20:11

CA Suraj Lakhotia Admin

First equation is incorrect Second 2-3=-1

How to open up n! and (n+2)!

Thread Starter

Chris Topher

CA Foundation

★ 5

05-Oct-21 20:15

Thread Starter

Chris Topher

How to open up n! and (n+2)!

Pls share specific question.

CA Suraj Lakhotia

Admin

06-Oct-21 10:23

CA Suraj Lakhotia Admin

Pls share specific question.

(n+2)! can be opened as (n+2)x (n+1) x n!

CA Suraj Lakhotia

Admin

06-Oct-21 10:24