Which of the following collections of letters will look the same in a mirror?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → AOVIVOA
A mirror reverses left and right, so a group looks the same only if every letter is symmetric about a vertical line (such as A, H, I, M, O, T, U, V, W, X, Y) and the group reads the same from right to left. AOVIVOA is the only group that does both; in the others, S or R turns round, and the order of the letters changes.
