40 persons are sitting in a row. How many persons are sitting between the 31st person from the left and the 25th person from the right?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 14
Two positions can be compared only when both are counted from the same end. A position counted from the right is turned into one from the left by: position from the left = total − position from the right + 1.
25th from the right \(=40-25+1=16\)th from the left
Persons between the 16th and the 31st from the left \(=31-16-1=14\)
