Here 4 positions of a cube are shown. Which sign will be opposite to ‘+’ ?

Question: Here 4 positions of a cube are shown. Which sign will be opposite to ‘+’ ?
[A].

%

[B].

–

[C].

x

[D].

$

Answer: Option C

Explanation:

From position I and III common face with % is in the same position. Hence according to rule (3) opposite is X.