In a row, Sanjay is at the 11th position from the top and the 13th position…
2024
In a row, Sanjay is at the 11th position from the top and the 13th position from the bottom. How many people are there in the row?
- A.
24
- B.
23
- C.
25
- D.
26
Show answer & explanation
Correct answer: B
Concept: When a person's position is given from both ends of a row (from the top and from the bottom), that person is counted once in each of the two counts. So the total number of people in the row = (position from top) + (position from bottom) − 1 — the “−1” removes the duplicate count of that one person.
Application:
Sanjay's position from the top = 11.
Sanjay's position from the bottom = 13.
Total people in the row = 11 + 13 − 1 = 24 − 1 = 23.
Cross-check: If there are 23 people in total and Sanjay is 11th from the top, then his position from the bottom should be 23 − 11 + 1 = 13, which matches the given information — confirming the answer.
Answer: There are 23 people in the row.