Manish is eighteenth from the right end and Rahul is fifth from the left end in a row of boys. If there are seven boys between Manish and Rahul, how many boys are there in the row?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 30
Rahul’s place is counted from the left and Manish’s from the right, so the row is built from the left end up to Rahul, then the boys between, then Manish and everyone to his right.
Rahul is 5th from the left: 4 boys and Rahul, 5 in all
7 boys stand between Rahul and Manish
Manish is 18th from the right: Manish and the 17 boys to his right, 18 in all
Boys in the row \(=5+7+18=30\)
The other order is not possible: with Manish to the left of Rahul, 7 boys would have to stand between them, but Rahul has only 4 boys on his left.