Read the following passage and answer the question:

In a class of 48 students arranged in descending order of marks, Mohit is ranked 15th from the top. Raina is ranked 18th from the bottom. Only 7 students have marks less than Raina but more than Pal.

If Yuvraj has scored more marks than only 10 students, then how many students have marks less than Raina?

1. A

   17

2. B

   7

3. C

   6

4. D

   18

Appeared in: NVS Staff Nurse - 2022

Explanation

• The question specifically asks for the number of students who scored less than Raina.
• The key piece of information is that 'Raina is ranked 18th from the bottom'.
• This ranking implies that if students are ordered from the lowest score to the highest, Raina is at the 18th position.
• Consequently, there are 17 students positioned below her, which means 17 students have marks less than her.
• The other details in the passage, such as the total number of students, Mohit's rank, and the number of students between Raina and Pal, are distractors for this particular question.

Why Other Options Were Wrong

• Option B: The number 7 represents the count of students who scored more than Pal but less than Raina. This is extraneous information and does not answer the question about the total number of students with marks less than Raina.
• Option C: The number 6 is not directly derivable from the relevant information and is likely a miscalculation or a random distractor.
• Option D: The number 18 is Raina's rank from the bottom, not the number of students below her. If a person is 18th in a line, there are 17 people before them (or in this case, below them in rank).

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning - Ranking and Order as background academic context rather than a clinical decision trigger.
• This question tests logical reasoning and the ability to filter relevant information from distractors, a skill essential for nurses in clinical settings.
• In a clinical scenario, a nurse must quickly identify critical patient data from a large amount of information (e.g., patient charts, lab reports) to make timely and accurate decisions.
• What if the question asked for Raina's rank from the top? With 48 total students, her rank from the top would be (Total Students - Rank from Bottom) + 1, which is (48 - 18) + 1 = 31st from the top.

How to Approach the Question

• First, carefully read the entire problem to understand all the given conditions and variables.
• Next, identify the specific question being asked. Here, it is 'how many students have marks less than Raina?'.
• Scan the provided information for the most direct clue. The statement 'Raina is ranked 18th from the bottom' is the key.
• Recognize that other details like the total number of students, Mohit's rank, and the information about Pal and Yuvraj are distractors designed to complicate the problem.
• Logically deduce that if someone is 18th from the bottom, there must be 17 individuals below them.
• Equate 'students with marks less than Raina' to 'students ranked below Raina' to arrive at the answer.

Concept Tested & Keywords

• Concept Tested: Logical Reasoning - Ranking and Order
• Stem keywords: class of students, descending order of marks, ranked from the top, ranked from the bottom
• Lead-in keywords: how many

Question ID

Q_Mtwg4HNQaGEk_LTTaGNf

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