Question

Which of the following words will create a readable sequence of letters upon reflection in a plane mirror?

• A. $\text{CRAWL}$
• B. $\text{FOOT}$
• C. $\text{MATH}$
• D. $\text{WHICH}$

Answer 1

The correct option is C $\text{MATH}$

We know that the image formed by a plane mirror undergoes lateral inversion.
Thus, the images of a letter will appear to be the same as the letter itself if that letter is symmetrical about the vertical axis.
Those letters are $\text{A, H, I, M, O,}\text{T, U, V, W,}$ and $\text{X}$.
The other letters, on reflection, wouldn't form a readable letter due to lateral inversion.
Thus, any word that is made of the above mentioned letters only can make a sequence of readable letters on inversion.
The word, among the options, is $\text{MATH}$.