Given Data

1. In a row of 25 boys, when Rohan was shifted by 4 places towards the left, he became 10th from the left end.

Question

What was Rohan's original rank from the right end of the row?

Answer

12th.

Solution

1. Rohan's new rank from left = 10.
2. Since he was shifted 4 places to the left, his original rank from left = 10 + 4 = 14th.
3. Original rank from right = Total - Original rank from left + 1.
4. Rank from right = 25 - 14 + 1 = 12th.
5. Rohan's original rank from the right end was 12th.