Freedom Nadd's Tomb - Ancient Boxes

On Dxun, in Freedom Nadd's tomb, you'll encounter two sets of an ancient terminal and an ancient box. Each has a riddle to be solved before they can be opened.

Ancient Box (East)

This one provides you with an equation with missing operators:

(6 _ 2) _ 8 _ 9 _ 1 = 13

There are two possible solutions:

(6 × 2) - 8 + 9 ÷ 1 = 13

or

(6 × 2) - 8 + 9 × 1 = 13

Didn't work?

Some people report that the game randomly selects one of these two answers and will only accept one — even though they both work. So, it's recommended that you save before trying this, and if you choose the wrong one, try it again.

Ancient Box (West)

The box on the other side of the tomb has a different puzzle. The puzzle asks for which circuit is faulty, and provides some additional options and this report:

A: feb
B: dce
C: eba
D: fac
E: fdc
F: acd

This one is pretty simple - the answer is the letter which appears most frequently: 'C'