Arun is fifth from the left end and Navin is twelth from the right end in a row of children, If Navin shifts by three places towards Arun he becomes tenth from the left end. How many children are there in the row?
1) 21
2) 22
3) 23
4) 24
5) None of these

Options

A. 21
B. 22
C. 23
D. 24

Answer

D

Explanation

Clearly, George lies towards the left end while Peter lies towards the right end of the row. So, when Peter shifts towards George, he shifts 3 places to the left. Thus, Peter is now 15th from the right end. But, Peter is 10th from the left end. So, Number of children in the row = (14 +1 +9) = 24.