• Coming soon...BoS Trial exams
    Watch this space!

perms and combs qn (1 Viewer)

Masaken

Unknown Member
Joined
May 8, 2021
Messages
1,778
Location
in your walls
Gender
Female
HSC
2023
1655077070063.png
1655077287871.png
(The answer is B, and I know the total number of ways without restriction is 9C3 but I have no idea how to get to the answer, many thanks in advance)
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top