If in the given word “QUALITY” all the vowels are changed to the just succeeding letter and all the consonants are changed to the just preceding letter according to the alphabetical series then which among the following letter is repeated after the arrangement?

The correct answer/option is None.

Let's break down the step-by-step process to find the final arrangement of the word “QUALITY” according to the given rules:

Step 1: Identify the vowels and consonants in the word “QUALITY”.
The letters in the word “QUALITY” are: Q, U, A, L, I, T, Y.
• Vowels: U, A, I
• Consonants: Q, L, T, Y

Step 2: Apply the rules to each letter.
• Rule for vowels: Change to the just succeeding letter (next letter in the alphabetical series).
• Rule for consonants: Change to the just preceding letter (previous letter in the alphabetical series).

Let's apply these rules letter by letter:
• Q (Consonant) ⇒ Preceding letter is P
• U (Vowel) ⇒ Succeeding letter is V
• A (Vowel) ⇒ Succeeding letter is B
• L (Consonant) ⇒ Preceding letter is K
• I (Vowel) ⇒ Succeeding letter is J
• T (Consonant) ⇒ Preceding letter is S
• Y (Consonant) ⇒ Preceding letter is X

Step 3: Analyze the new letter arrangement.
The new sequence of letters is: P, V, B, K, J, S, X.

Step 4: Check if any letter is repeated.
In the new sequence [P, V, B, K, J, S, X], every letter appears exactly once. There are no repeated letters.

Therefore, none of the letters are repeated after the arrangement.