Question:

Twenty-five children are standing in a row. “R” is in 16th place from the right end and “B” is in 18th place from the left end. How many children are there between “R” and “B”?

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In such problems, always convert positions from one end to the other, and then calculate the distance between them.
Updated On: Apr 3, 2025
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The Correct Option is D

Solution and Explanation

Given:
- There are 25 children in total.
- R is in 16th place from the right end, meaning R is at the 2516+1=10 25 - 16 + 1 = 10 th position from the left end.
- B is in 18th place from the left end.
Now, the number of children between R and B is:
Number of children between R and B=18101=7 \text{Number of children between R and B} = 18 - 10 - 1 = 7 Thus, there are 7 children between R and B.
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