Answer:
So, we can do it in 720 ways.
Step-by-step explanation:
We have been given total of six trophies to arrange in the top shelf of the bookcase
If we need to arrange n things in different ways we can do it in n! ways
Similarly, Here we will do it in 6! ways
n!=n(n-1)(n-2).....1
So, 6!=6 x 5 x 4 x 3 x 2 x 1=720
let : A = - 2xy
put : x = - 1 and y = 6
you have : A = - 2 (-1)(6)
A = 12
The property here is the Commutative Property of Addition.
V(m)=320 (1.005).