What percentage of the world's population lives in India?

Appeared in: Raj. CHO -2020

Explanation

According to 2024 data, India's population is approximately 1.45 billion.
The total world population in 2024 is estimated to be around 8.16 billion.
Calculating the ratio (1.45 / 8.16) gives approximately 17.77%.
Therefore, India is home to about 17.8% of the world's population.
Among the given choices, 'Approximately 17%' is the closest and most accurate answer.

Option A: This figure is a significant underestimate. A 7% share would imply a world population of over 20 billion or an Indian population of around 560 million, both of which are factually incorrect.
Option B: This is also an underestimate. A 12% share would mean India's population is around 970 million, a figure from the late 1990s.
Option D: This is an overestimate. A 22% share would mean India's population is nearly 1.8 billion, which is much higher than the current estimates.

Visual 1: Pie Chart - A pie chart illustrating the population share of the world's most populous countries (India, China, USA, etc.) to visually represent India's significant portion.
Visual 2: Bar Graph - A bar graph comparing the absolute population numbers of the top 10 most populous countries, highlighting India in the first position.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Demographics and Population Statistics as background academic context rather than a clinical decision trigger.
The fact that one in every six people on Earth lives in India places an immense strain on the country's healthcare infrastructure, including hospitals, clinics, and workforce.
Public health initiatives, such as the Universal Immunization Programme (UIP) or TB control programs, must operate on a massive scale, requiring meticulous planning, supply chain management, and a vast network of healthcare workers.
The high population density in many areas facilitates the rapid spread of communicable diseases, making disease surveillance and outbreak response critical public health functions.

How to Approach the Question

This is a factual recall question based on general knowledge of world demographics.
First, recall the approximate population of India (around 1.4 billion) and the world (around 8 billion).
Perform a quick mental estimation: 1.4 is a fraction of 8. You can simplify this to 14/80.
Recognize that 10% of 8 billion is 800 million, and 20% is 1.6 billion. Since India's population (1.4 billion) is between these two numbers but closer to 1.6 billion, the percentage must be between 10% and 20%, but closer to 20%.
Evaluate the options: 7% and 12% are too low. 22% is too high. 17% falls within the estimated range and is the most plausible answer.
Select the option that best matches your estimation.

Concept Tested & Keywords

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