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This question is based on the following words:
PAN BIT SOG RUB
In each of the words, each vowel is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. In how many letter-clusters thus formed, will no vowel appear?

This question was previously asked in
RRB ALP 2025 CBT 2 Mechanic Motor Vehicle Question Paper (28-Jul-2026) (Shift 1)
The correct answer is
One

Letter Transformation Rules

The transformation rule involves changing letters based on their type (vowel or consonant) and position in the English alphabet.

  • Vowels (A, E, I, O, U) are replaced by the letter immediately following them.
    • A \(\to\) B
    • E \(\to\) F
    • I \(\to\) J
    • O \(\to\) P
    • U \(\to\) V
  • Consonants are replaced by the letter immediately preceding them.
    • Example: B \(\to\) A, C \(\to\) B, D \(\to\) C, etc.

Applying Transformations to Words

Let's apply the rules to each given word:

  1. PAN:
    • P (consonant) \(\to\) O
    • A (vowel) \(\to\) B
    • N (consonant) \(\to\) M
    Resulting cluster: OBM (Contains the vowel 'O')
  2. BIT:
    • B (consonant) \(\to\) A
    • I (vowel) \(\to\) J
    • T (consonant) \(\to\) S
    Resulting cluster: AJS (Contains the vowel 'A')
  3. SOG:
    • S (consonant) \(\to\) R
    • O (vowel) \(\to\) P
    • G (consonant) \(\to\) F
    Resulting cluster: RPF (Contains no vowels)
  4. RUB:
    • R (consonant) \(\to\) Q
    • U (vowel) \(\to\) V
    • B (consonant) \(\to\) A
    Resulting cluster: QVA (Contains the vowel 'A')

Counting Clusters Without Vowels

After transforming the letters in each word:

  • OBM has a vowel (O).
  • AJS has a vowel (A).
  • RPF has no vowels.
  • QVA has a vowel (A).

Only one transformed cluster (RPF from SOG) contains no vowels.

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Similar Questions

  1. Each vowel in the word PROVIDE is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. Which of the following letters will be third from the left in the new number thus formed?
  2. Each vowel in the word CRUMBLE is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. Which of the following letters will be third from the left in the new group of letters thus formed?
  3. Each letter in the word VISION is changed to the letter immediately following it in the English alphabetical order, and then all the letters thus formed are arranged in reverse alphabetical order. Which letter will be fourth from the left?
  4. This question is based on the following words:
    FAT HOG NIP LUX
    In each of the words, each vowel is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. In how many letter-clusters thus formed, will no vowel appear?
  5. Each letter in the word PERSON is changed to the second letter following it in the English alphabetical order, and then all the letters thus formed are arranged in the English alphabetical order. Which letter will be fifth from the right in the new group of letters formed?
  6. Each vowel in the word JOURNAL is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. How many vowels are there in the new group of letters thus formed?
  7. Each letter in the word SHOCKED is changed to the letter immediately preceding it in the English alphabetical order and then all the letters thus obtained are arranged in the English alphabetical order. Which of the following letters will be second from the right in the new group of letters thus formed?
  8. Each letter in the word BANNER is changed to the letter immediately preceding it in the English alphabetical order, and then all the letters thus formed are arranged in reverse alphabetical order. Which letter will be third letter from the right in the new number thus formed?
  9. Refer to the following letter series and answer the question that follows. Counting to be done from left to right only.
    (Left) P Q W T A V A B T A X H L T O K W L X T S (Right)
    How many such vowels are there, each of which is immediately preceded by a consonant and also immediately followed by a vowel?
  10. Each letter in the word DUSTING is changed to the letter immediately following it in the English alphabetical order and then all the letters thus formed are arranged in alphabetical order. Which of the following letters will be third from the right in the new group of letters thus formed?

Important Questions from Alphabet or Word Test

  1. Select the correct option that shows the logical and meaningful sequence of the given words.

    i. flower

    ii. sprout

    iii. fruit

    iv. plant

    v. seed

  2. How many times consonants exceed vowels in the word, ‘ADVANCEMENT’?

  3. Which one of the following four addresses is NOT EXACTLY the same as the one given below?

    Steve Pipe 5Dick Collins Hall Redhill Street NW10

    (i) Steve Pipe 5Dick Collins Hall Redhill Streat NW10

    (ii) Steve Pipe 5Dick Collins Hall Redhill Street NW10

    (iii) Steve Pipe 5Dick Collins Hall Redhill Street NW10

    (iv) Steve Pipe 5Dick Collins Hall Redhill Street NW10

  4. The series given below contains a sequence of alphabets and numbers. Identify the incorrect combination:

    i. ytbei732btyei

    ii. ytbei732btyei

    iii. ytbe1732btyei

    iv. ytbei732btyei

  5. The series given below contains a sequence of alphabets and numbers. Identify the incorrect combination:

    i. huioi70110ihuoi

    ii. huioi70110ihuoi

    iii. huioi70110ihuoi

    iv. huioi70110ihooi

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