Which of the following method is used to forecast the population of old and very large city? 

Explanation:

Arithmetical increase method

• Assumes population increases by a constant number every decade.

• Suitable for old cities with slow, steady growth.

• Simple and widely used when growth has stabilized.

Additional InformationLogistic curve method

• Assumes rapid initial growth which slows down as saturation approaches.

• Best for very large cities nearing capacity.

• Involves a mathematical S-curve, more complex but realistic for long-term projection.

Graphical Method

• Plots past population data on a graph to estimate future growth.

• Useful for visual understanding but lacks precision.

• Relies on user judgment, not ideal for policy-level decisions.

Geometric Progression Method

• Assumes population increases at a constant percentage rate.

• Suitable for developing or new towns with high growth rates.

• Not suitable for old cities with slowing growth.