Both India and Pakistan emerged as independent nations in 1947 and adopted several similar strategies to pursue economic development in their early years. Two of the major strategies commonly followed by both countries are:
Mixed Economic Structure: Both India and Pakistan adopted a mixed economy model. This model combined the strengths of both public and private sectors, with the government actively participating in key areas such as infrastructure, defense, and heavy industries, while allowing private enterprises in other sectors.
Focus on Industrialization and Import Substitution: Both nations prioritized industrial development and implemented protectionist policies. They promoted import substitution industrialization (ISI), which aimed at reducing dependence on foreign goods by encouraging domestic production through tariffs and quotas on imports.
These strategies aimed to build self-sufficiency and accelerate economic growth in their early decades of independence.
Arrange the following theories in chronological order starting from oldest to latest:
(A) Keynesian Theory of Demand for Money
(B) Quantity Theory of Money
(C) Cambridge Cash Balance Approach
(D) Modern Quantity Theory of Money
Choose the correct answer from the options given below:
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 \(P,O,Q\).