everybody knows its in the main hall right? well even you tried in the entrance left corner onto its bottom still cannot find it! but if you look closely and umm its actually like hidden! so we need to find it in the place it will not appear the one with light and its not there then that means it is in the entrance or maybe they could be around the main hall
wished that help
it will be in the attic of the house of anubis
it is in the woods
in victors office
its in the attic
Inside the house.
In the Main Hall
12, 24, 31, 41, 52.
Nope it is in the attic you'll see the word end
you twist the pieces until they make the cup of ankh.
in the main hall but is in the dark part or entrance left bottom of the corner
for the puzzle on the left it will be 153 and the fifth one is 312
you find it by that thing shaped as an S