csatmedium
In a queue, Mr. X is fourteenth from the front and Mr. Y is seventeenth from the end, while Mr. Z is exactly in between Mr. X and Mr. Y. If Mr. X is ahead of Mr. Y and there are 48 persons in the queue, how many persons are there between Mr. X and Mr. Z?
- A.6
- B.7
- C.8
- D.9
▶ Answer & Explanation
Correct answer: C. 8
Mr. X's position from the front is 14. Mr. Y's position from the end is 17, which means his position from the front is 48 - 17 + 1 = 32. The total number of people between X and Y is 32 - 14 - 1 = 17. Mr. Z is exactly in between X and Y, meaning Z is (17 - 1) / 2 = 8 positions away from X (or Y). Therefore, there are 8 persons between Mr. X and Mr. Z.
Source: UPSC csat 2011