In a class of 35 students, Meena's rank from the top is 12th. After interchange with Seema, Meena's rank becomes 22nd from the top. What was Seema's original rank from the bottom?

Explanation

When Meena and Seema interchange positions, Meena's new rank from the top becomes the rank that Seema originally held from the top. Therefore, Seema was originally 22nd from the top in a class of 35 students. Ranking questions use the opposite-side conversion rule: position from the opposite side equals total number in the row minus position from the given side plus one. Applying it here gives 35 - 22 + 1 = 14. So Seema's original rank from the bottom was 14th, not 22nd from the top.

Why the other options are wrong

• (A) 22nd is Seema's original rank from the top after the interchange is interpreted, not her rank from the bottom.
• (B) 13th would result from subtracting 22 from 35 without adding one, which misses the counted student's own position.
• (C) 15th does not follow the opposite-side rank formula for a total of 35 students and a top rank of 22.

Concept

This tests ranking and order, especially conversion between top and bottom ranks after an interchange of positions. It recurs in RAS reasoning because a small change in wording can shift the required rank from the given side to the opposite side.

Source

• GeeksforGeeks

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