Refer to the following letter series and answer the question. Counting to be done from left to right. (Left) CBASNUCOMDKIFJHAIPBEBH (Right) How many such consonant are there each of which is immediately preceded by a consonant and also immediately followed by a consonant?

1. A

   4

2. B

   2

3. C

   3

4. D

   1

Appeared in: RRB Nsg. Superintendent-2026 (Shift -1st)

Explanation

• The question requires identifying a specific pattern: a consonant that is immediately surrounded by two other consonants (Consonant-Consonant-Consonant).
• First, identify the vowels (A, E, I, O, U) and consonants in the given series: C B A S N U C O M D K I F J H A I P B E B H.
• Scanning the series for the 'C-C-C' pattern reveals two instances.
• The first instance is 'M D K', where the consonant 'D' is preceded by 'M' and followed by 'K'.
• The second instance is 'F J H', where the consonant 'J' is preceded by 'F' and followed by 'H'.
• Counting these two instances gives the final answer of 2.

Why Other Options Were Wrong

• Option A: This count is too high. A careful scan of the series reveals only two consonants that fit the specified criteria, not four.
• Option C: This count is incorrect. There are only two such consonants ('D' and 'J'), not three.
• Option D: This count is too low. It correctly identifies one of the patterns but misses the second one.

Related Visual

• Visual 1: Infographic - A visual breakdown of the letter series 'CBASNUCOMDKIFJHAIPBEBH'. Each letter is color-coded as either a vowel or a consonant. The two 'Consonant-Consonant-Consonant' patterns ('MDK' and 'FJH') are highlighted with boxes to clearly show the solution.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning and Pattern Recognition in a Letter Series as background academic context rather than a clinical decision trigger.
• This type of question assesses logical reasoning and attention to detail, which are foundational skills for nurses who must accurately interpret data and follow complex protocols.
• While not a direct clinical task, the cognitive skills tested are relevant for tasks like medication administration checks, reading patient charts, and interpreting monitoring equipment, where missing a detail can have significant consequences.
• What if? - If the question asked for a vowel preceded and followed by a consonant (C-V-C pattern), the answer would change. The sequences would be 'BAS', 'NUC', and 'COM', making the answer 3.

How to Approach the Question

• First, carefully read the question to understand the exact condition you need to find. Here, it's a consonant preceded and followed by a consonant (C-C-C pattern).
• Write down the given letter series on a piece of paper to avoid errors: CBASNUCOMDKIFJHAIPBEBH.
• Go through the series and mark each letter as a vowel (V) or a consonant (C). This makes the pattern easier to spot. The series becomes: C C V C C V C V C C C V C C C V V C C V C C.
• Systematically scan the marked series from left to right, looking for the specific 'C-C-C' sequence.
• Count every instance where you find this three-consonant pattern.
• Compare your final count with the given options to select the correct answer.

Concept Tested & Keywords

• Concept Tested: Logical Reasoning and Pattern Recognition in a Letter Series
• Stem keywords: letter series, consonant, preceded by a consonant, followed by a consonant
• Lead-in keywords: How many

Question ID

QzAzGl-gFVI8ZLUanP99Ji

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