Find out from amongst the four alternatives (a), (b), (c), (d), as to how the pattern would appear when the transparent sheet(X) is folded at the dotted line.
Since Nithya and Suganya 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. Therefore Number of girls in the row = (16 + 1 + 9) = 26.