Are you a demographer?

Question number 1

Hom many people live on planet Earth?

Choose an answer

1 About 7 million

2 About 7 bilion

3 About 700 bilion

The right answer is no.2 :

The world population is around 7 bilion.

Question number 2

The world population

Choose an answer

1 is increasing

2 is stable

3 is decreasing

The right answer is no.1 :

The world population is increasing by 1.1% each year (rate observed in 2010). if it continued at this rate it would double in 60 years.

Question number 3

What is the most densely populated continent ?

Choose an answer

1 Europe

2 Africa

3 Asia

The right answer is no.3 :

Asia has long been the most densely populated continent, and will remain so in the future.

Question number 4

Human length of life

Choose an answer

1 is increasing

2 is stable

3 is decreasing

The right answer is no.1 :

Length of life, which is also the age at death, is 69 years on average across the world (in 2010). It has risen sharply over the last century (it was around 35 years in 1900 and 45 years in 1950) and still increasing.

Question number 5

For every 1,000 babies born in the world, how many die before age 1 ?

Choose an answer

1 98

2 43

3 7

The right answer is no.2 :

for every 1,000 babies born, 43 die before reaching their first birthday (2010). This is a world average, and there are big differences from one continent to another.

Question number 6

Which continent has the lowest populaton density ?

Choose an answer

1 Asia

2 Africa

3 Oceania

The right answer is no.3 :

Population density is lowest in Oceania, with 4 inhabitants per square kilometre(km²) in 2010, compared with 34 inhabitants per km² in Africa and 130 inhabitants per km² in Asia.

Question number 7

Across the world, women are having

Choose an answer

1 fewer and fewer children

2 more and more children

3 the same number of children

The right answer is no.1 :

Fertility decreased from 5 children per woman on average in 1950 to 2.5 in 2010, and it still declining.

Question number 8

The world population is

Choose an answer

1 getting younger

2 stable in terms of average age

3 getting older

The right answer is no.3 :

The world population is ageing, the proportion of old people is increasing and that of young people is failing.

Question number 9

What is the world’s most populated country ?

Choose an answer

1 India

2 China

3 United States

The right answer is no.2 :

China, with 1.3 bilion inhabitants in 2010 is the world’s most populated country.

Question number 10

On what contient is population increasing most quicky ?

Choose an answer

1 Asia

2 Africa

3 South Amercia

The right answer is no.2 :

The population is increasing by 2.2% each year in africa, compared with 1% in South America and in Asia (in 2010).

To improve your score, look in the "All about population" pages on our website.

Question number 1

What is the world’s most populated city ?

Choose an answer

1 New York

2 Toyko

3 Mexico City

The right answer is no.2 :

Tokyo, with an urban agglomeration totalling 36.7 milion inhabitants in 2010 is the world’s biggest city.

Question number 2

What is likely to be the world’s most populated country in 2050 ?

Choose an answer

1 China

2 India

3 Brazil

The right answer is no.2 :

Under the United Nations medium projection, India will be the world’s most populated country in 2050, with almost 1.7 bilion inhabitants, ahead of China with 1.3 bilion and Brazil with 223 milion.

Question number 3

How many babies are born in the world every second ?

Choose an answer

1 1

2 4

3 40

The right answer is no.2 :

Four babies are born every second. For the 1.5 bilion women of childbearing age in the world, this represents a lifetime total of 2.5 children per woman.

Question number 4

In the world, what is the ratio of boys to girls among newborns ?

Choose an answer

1 boys outnumber girls

2 boys and girls are born in equal numbers

3 girls outnumber boys

The right answer is no.1 :

More boys are born than girls. Up to the 1980s, the ratio was 105 boys for 100 girls. It has risen since then to 107 boys per 100 girls in 2010 due to the selective abortion of female foetuses in Asia.

Question number 5

What country has the highest life expectancy ?

Choose an answer

1 Switzerland

2 United States

3 Japan

The right answer is no.3 :

In Japan, life expectancy at irth is 83 years (in 2010), comapred with 82 years in Switzerland and 78 years in the United States.

Question number 6

Which of these countries is most densely populated ?

Choose an answer

1 The Netherlands

2 Canada

3 India

The right answer is no.1 :

The population density of a country is expressed as a number of inhabitants per unit of surface area. The population of the Netherlands is much smaller than that of India, but because it is smaller in size, the population density is higher : 400 inhabitants per km² in 2010 versus 373 in India.

Question number 7

By how much does the world population increase each year ?

Choose an answer

1 7.7 million

2 77 million

3 777 million

The right answer is no.2 :

The world population increases by 77 million inhabitants (1.1%) each year.

Question number 8

What percentage of the world population is urban ?

Choose an answer

1 Below 50%

2 50%

3 Above 50%

The right answer is no.3 :

More than half the world’s inhabitants live in a town or city (50.5%) up from just 10% in 1900. The percentage urban is set to increase further in coming years.

Question number 9

Who live longer, men or women ?

Choose an answer

1 men

2 women

3 no difference between men and women

The right answer is no.2 :

Women, in 2010, they lived 70 years on average, comparend with 67 years for men.

Question number 10

What proportion of the world population lives in Africa ?

Choose an answer

1 1 inhabitant in 7

2 1 inhabitant in 14

3 1 inhabitant in 21

The right answer is no.1 :

Africa, including North Africa, is home to one in seven of the world’s population (1 bilion out of 7 bilion in 2010). Under the United Nations projections, Africans will represent a quarter of the world’s inhabitants by the end of the 21st century.

To improve your score, look in the "All about population" pages on our website.

Question number 1

What are the world’s three most populated countries, in order ?

Choose an answer

1 China, India, United States

2 India, China, United States

3 China, United States, India

The right answer is no.1 :

China is the world’s most populated country, with just over 1.3 billion inhabitants, just ahead of India with more than 1.2 billion. The United States are fare behind, with slightly more than 300 million inhabitants.

Question number 2

How many cities in the world had more than 5 million inhabitants ?

Choose an answer

1 5

2 54

3 545

The right answer is no.2 :

According to the United Nations, there were 54 urban agglomerations with more than 5 millions inhabitants in 2010. There were only 8 in 1950 (New York, Tokyo, London, Paris, Shanguai, Moscow, and Buenos Aires).

Question number 3

In the world population, what is the ratio of males to females ?

Choose an answer

1 more males than females

2 the same number of males and females

3 more females than males

The right answer is no.1 :

There are 102 males for 100 females in the world (2010). At birth, boys outnumber girls (107 boys to 100 girls), but males die at higher rate than females at all ages, At around age 50, the number of men and women are roughly equal, and beyond that age, women outnumber men.

Question number 4

How many people die in the world every second ?

Choose an answer

1 2

2 20

3 200

The right answer is no.1 :

Around two people on Earth die every second. The exact number is 1.8, making a total of 153,000 per day and 56 million per year (2010). This represents around 8 annual deaths per 1,000 population.

Question number 5

What are the world’s three most populated cities, in order ?

Choose an answer

1 New York, Tokyo, Bombay

2 Tokyo, Mexico City, New York

3 Bombay, Mexico City, New York

The right answer is no.2 :

According to United Nations statistics, they are, in order, Tokyo, whose urban agglomeration totalled 36.7 million inhabitants in 2010, followed by Mexico City and New York.

Question number 6

In the world, the population aged under 15 represents :

Choose an answer

1 almost one person in four

2 almost one person in five

3 almost one person in ten

The right answer is no.1 :

There are 1.85 billion under-15s in the world, which is almost 25% of the 7 billion total inhabitants (in 2010).

Question number 7

In which of these countries is life expectancy shortest ?

Choose an answer

1 Bangladesh

2 Ivory Coast

3 Senegal

The right answer is no.2 :

According to the United Nations, life expectancy is 55 years in Ivory Coast compared with 59 years in Senegal and 69 years in Bangladesh (in 2010).

Question number 8

What percentage of the world’s population lives outisde the country where they were born ?

Choose an answer

1 3%

2 10%

3 30%

The right answer is no.1 :

People living outside the contry where they were born are immigrants in their host country, They totalled close to 200 million world-wide in 2010, i.e. almost 3% of the world population.

Question number 9

By how much does the world population increase each day ?

Choose an answer

1 2,000

2 200,000

3 20 million

The right answer is no.2 :

The world population grows by 200,000 every day.

Question number 10

How old was Jeanne Calment, the world’s longest-living woman, when she died ?

Choose an answer

1 102

2 112

3 122

The right answer is no.3 :

Jeanne Clament, a Frenchwoman, died in 1997 at The age of 122.

To improve your score, look in the "All about population" pages on our website.