Discussion
Sachin is 7th from the left end of a row of 40 students. What is his position from the right end?
Answer: B
Sachin is 34th from the right end.
The position from the right equals the total number of students minus the position from the left, plus one. So it is 40 − 7 + 1 = 34.
The answer 33 forgets to add one, because Sachin himself is counted in both positions. 32 and 31 are further from the correct figure.
The two ranks always add up to one more than the total, because the same person is counted in both. So rank from the left plus rank from the right equals 41 here, and 41 − 7 = 34. This shortcut works for any row.
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