WBCS.LIVE practice question

In a row of 30 boys, R is 4th from the right and S is 10th from the left. How many boys are there between R and S?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 15
  2. 16
  3. 17
  4. 14

Correct answer and explanation

Correct answer: 16

Explanation: āœ… Correct Answer: (B) 16 šŸ“š Explanation: Step-1: Total boys = 30. Position of R from right = 4th. This means R is the (30 - 4 + 1) = 27th boy from the left. Step-2: Position of S from left = 10th. Step-3: To find the number of boys between them, subtract the lower rank from the higher rank and then subtract 1: (27 - 10) - 1 = 17 - 1 = 16. There are 16 boys between them.