Which of the following collections of letters will look the same in the water?
(A) CHI0ZKDX
(B) EZKIX0ED
(C) DIOSHCX
(D) KHEXCHD
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (D) only
In a water image every letter is turned upside down (its top and bottom change places), while the order of the letters from left to right stays the same. A group looks the same in water only if every letter is symmetrical about a horizontal line through its middle. Below, each group is shown above the dashed water line and its water image below it; letters that keep their shape are green and those that change are red.
Tip: The capital letters that look the same in water are B, C, D, E, H, I, K, O, X (horizontal symmetry); those that look the same in a mirror are A, H, I, M, O, T, U, V, W, X, Y (vertical symmetry).