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Question

All 79 students in a class are standing in a row facing north. Shantanu is 37th from the right end while Vani is 23rd from the left end. How many people stand between Shantanu and Vani?

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
19

Calculate Shantanu's Left Position

The total number of students in the class is 79.

Shantanu is 37th from the right end.

To find Shantanu's position from the left end, we use the formula:

Position from left = Total students - Position from right + 1

Shantanu's left position = $79 - 37 + 1 = 42 + 1 = 43$.

So, Shantanu is 43rd from the left end.

Calculate Vani's Left Position

Vani is 23rd from the left end.

Calculate People Between Shantanu and Vani

We have Shantanu's position from the left (43rd) and Vani's position from the left (23rd).

Since Vani (23rd) is closer to the left end than Shantanu (43rd), Vani is to the left of Shantanu.

The number of people standing between them is calculated as:

Number between = (Position of the person further from the left) - (Position of the person closer to the left) - 1

Number between = $43 - 23 - 1$

Number between = $20 - 1 = 19$.

Therefore, there are 19 people standing between Shantanu and Vani.

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