RML MAINS 2025
Reasoning
Medium
Which of the following is not a perfect square number?
Appeared in: RML MAINS 2025
Explanation
- A perfect square is an integer that is the square of another integer.
- The number 131 is not a perfect square because its square root is approximately 11.44, which is not an integer.
- The closest perfect squares to 131 are 121 (11²) and 144 (12²).
Why Other Options Were Wrong
- Option A: This is incorrect because 121 IS a perfect square.
- Option B: This is incorrect because 225 IS a perfect square.
- Option C: This is incorrect because 625 IS a perfect square.
Related Visual
- No visual required for this question type.
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Perfect Squares in Mathematics as background academic context rather than a clinical decision trigger.
- While not a clinical skill, quantitative aptitude is a key component of many nursing entrance and competitive examinations.
- Strong numerical skills are foundational for tasks like medication dosage calculation, IV drip rate monitoring, and interpreting lab results, making quantitative reasoning an important competency for nurses.
- What if the question asked for the number that IS a perfect square? In that case, any of the other three options (121, 225, 625) would be a correct answer, and the question would likely be a 'multiple correct' format or be rephrased.
How to Approach the Question
- First, understand the question's requirement. It asks for the number that is 'not' a perfect square, which is a negative framing.
- Define what a perfect square is: a number that is the result of multiplying an integer by itself (e.g., 9 = 3 × 3).
- Systematically check each option to see if it fits the definition of a perfect square.
- Recall or calculate the square root of each number. If the square root is a whole number, it's a perfect square.
- The option that does not have a whole number as its square root is the correct answer.
Concept Tested & Keywords
- Concept Tested: Perfect Squares in Mathematics
- Stem keywords: perfect square, number
- Lead-in keywords: not
- Negative lead-in flag: Question asks for the option that is NOT a perfect square.
Question ID
Qpp_T0QzUyktSObbdSM0UW
Practise the full RML MAINS 2025
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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