There are 40 boys in a row. Ramesh is fourteenth from the right end of the row. What is his position from the left end of the row?

Appeared in: RRB Staff Nurse Kolkata-2015

Explanation

The core concept is that a person's rank from the left and right sums to one more than the total number of people (Total = Left + Right - 1).
To find the position from the left, the formula is rearranged to: Position from Left = (Total - Position from Right) + 1.
Given a total of 40 boys and a position of 14th from the right, the calculation is (40 - 14) + 1.
This simplifies to 26 + 1, which equals 27.
Therefore, Ramesh is the 27th boy when counting from the left end of the row.

Option B: This result (26) is obtained by simply subtracting the position from the right (14) from the total (40). This calculation finds the number of boys to the left of Ramesh, not his actual position.
Option C: This is an incorrect calculation. It might result from an arithmetic error, such as incorrectly subtracting 15 from 40.
Option D: This is an incorrect calculation. It might result from an arithmetic error, such as incorrectly subtracting 15 from 40 and then forgetting to add 1.

Visual 1: Diagram - A simple line diagram showing a row of 40 stick figures. It would highlight the 14th position from the right and then show the count from the left to the 27th position, visually demonstrating the relationship.

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 type of logical reasoning is foundational for problem-solving skills required in many fields, including nursing.
Nurses often need to quickly calculate and sequence tasks, manage patient queues, or interpret data that involves ordering and ranking.
What if? - If Ramesh was 14th from the left instead, his position from the right would be (40 - 14) + 1 = 27th. The logic remains the same, just applied from the opposite direction.

How to Approach the Question

First, identify the key pieces of information given: the total number of people (40) and the position from one end (14th from the right).
Recognize that this is a ranking and order problem.
Recall the standard formula: Total = (Position from Left) + (Position from Right) - 1.
Rearrange the formula to solve for the unknown, which is the position from the left: Position from Left = (Total - Position from Right) + 1.
Substitute the given numbers into the formula: (40 - 14) + 1.
Perform the calculation carefully to arrive at the final answer and select the corresponding option.

Concept Tested & Keywords

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Practise the full RRB Staff Nurse Kolkata-2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.