Son preference in India, Pakistan, and China is evident due to their skewed sex ratios, driven by socio-cultural and economic factors:
Economic Dependence: Sons are often seen as economic assets, expected to support parents in old age, unlike daughters who traditionally marry and move to another household.
Cultural Beliefs: Sons are preferred for continuing the family name and performing last rites, which are considered important in many religions.
Gender Bias: Discriminatory practices, such as dowry and limited opportunities for women, reinforce the preference for male children.
Policy Impact: In China, the one-child policy amplified son preference, leading to selective births and gender imbalances.
On the same political outline map of India, two places related with the centres of revolt of 1857 one marked as A and B. Identify them and write their names on the lines marked near them.
(A) Delhi
(B) Calcutta
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).