In a row of girls, Rita and Monika occupy the ninth place from the right end and tenth place from the left end, respectively. If they interchange their places, Rita and Monika occupy seventeenth place from the right and eighteenth place
from the left, respectively. How many girls are there in the row ?
[ A ] 25
[ B ] 26
[ C ] 27
[ D ] None
Answer : Option
Since, Rita and Monika exchange places, so Rita’s new position is the same as Monika’s earlier position.
This position is 17th from the right and 10th from the left.
∴ Number of girls in the row = (16 + 1 + 9) = 26.