The total number of students is 9. In choosing the first and second student, it means that the order matters. We would use the permuttation formula which is expressed as
P = n!/(n - r)!
Where
P represents the number of permuttations
n is the total number of objects in the set
r is the number of objects to be chosen from n
From the information given
n = 9
r = 2
P = 9!/(9 - 2)! = 9!/7!
P = 9 * 8 * 7!/7!
P = 72
The number of ways is 72from n
From the information given
n = 9
from n
From the information given
n = 9
