In the following figure, the rectangle represents the artists, the triangle represents the writers, the circle represents the social workers and the square represents the father. Which group of letters represents social workers who are not fathers?
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.