NVS Staff Nurse - 2022
Reasoning
Hard
"Select the number that will replace the question mark (?) in the following series: 44, 125, 189, 238, 274, ?"
Appeared in: NVS Staff Nurse - 2022
Explanation
- The series progresses by adding the square of consecutively decreasing integers to each term.
- The differences between consecutive terms are 81 (9²), 64 (8²), 49 (7²), and 36 (6²).
- Following this pattern, the next difference must be 25 (5²).
- Adding 25 to the last known term (274) gives the next term in the series.
- Calculation: 274 + 25 = 299.
Why Other Options Were Wrong
- Option A: This would mean the value added to 274 is 16 (290 - 274). While 16 is a perfect square (4²), the pattern requires adding the next square in the descending sequence, which is 5², not 4².
- Option C: This would mean the value added to 274 is 8 (282 - 274). The number 8 is not a perfect square and does not fit the pattern of adding squared numbers.
- Option D: This would mean the value added to 274 is 62 (336 - 274). The number 62 is not a perfect square and breaks the established pattern of the series.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Number Series Pattern Recognition as background academic context rather than a clinical decision trigger.
- This question tests logical reasoning and analytical skills, which are fundamental for nurses.
- Nurses use pattern recognition daily, for example, in identifying trends in a patient's vital signs or recognizing the progression of symptoms.
- Strong analytical skills help in making quick, accurate clinical decisions, interpreting lab data, and calculating medication dosages.
How to Approach the Question
- First, analyze the given series: 44, 125, 189, 238, 274, ?.
- Calculate the difference between consecutive terms to identify a potential pattern.
- 125 - 44 = 81
- 189 - 125 = 64
- 238 - 189 = 49
- 274 - 238 = 36
Concept Tested & Keywords
- Concept Tested: Number Series Pattern Recognition
- Stem keywords: number series, replace the question mark, 44, 125, 189, 238, 274
- Lead-in keywords: Select the number
Question ID
QCKqw541iJ9eNBbWEBcrKj
Practise the full NVS Staff Nurse - 2022
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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