Brain Out is one of the most played puzzle games app of 2020 and now they have rebranded the gamed with chapters and the levels are replaced with numbers. Brain Out Chapter 4 or Level 4 is called Student and this is the 42th puzzle of that Chapter

Brain Out if 1`=5 2=15 3=215 4=321 then 5=?

Answer

• If 1=5 then 5=1.