NIACL Model Paper 1 with solutions for free online practice

Question : 39 of 100

Marks: +1, -0

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 then places, then Rita and Monika occupy seventeenth place from the right and eighteenth place form the left respectively. How many girls are there in the row?