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A quiz of fun trivia: bite-sized knowledge that leads to new insights.

This is a trivia quiz that could prompt you to pay attention to things that have become routine in daily life—things you do without question, almost on autopilot.

By focusing closely on what you’ve taken for granted and learning the reasons behind it, you may strengthen your ability to think and observe.

Precisely because these are things we rarely stop to consider, posing them as questions to people around you might spark lively discussions.

Once you realize that everyday life is full of mysteries, you may find each day more enjoyable.

A fun trivia quiz: little-known facts that bring new insights (11–20)

Which side is the front of the 10-yen coin?

Which side is the front of the 10-yen coin?
  1. The one without the era name
  2. The one with an era name
  3. Both are tables.
See the answer

The one without the era name

Legally, there is no designated front side. However, in the manufacturing process, a front side must be determined in advance, and in practice the side without the year is produced as the front. Depending on whether you prioritize the year and numerals or the design, your perception of which side is the front may differ.

What illnesses are less likely to be contracted in Antarctica?

What illnesses are less likely to be contracted in Antarctica?
  1. a cold
  2. suntan
  3. Frostbite
See the answer

a cold

In Antarctica, outside visitors are limited and there is very little movement of people, so viruses are rarely introduced. As a result, it is said that the likelihood of catching a cold is extremely low. Furthermore, hygiene management at Antarctic stations is rigorous, which keeps the risk of transmission among residents to a minimum.

How much time do we spend sleeping over the course of a lifetime?

How much time do we spend sleeping over the course of a lifetime?
  1. 5 years
  2. 10 years
  3. 20 years
See the answer

20 years

Considering the average lifespan and the average amount of sleep per day, it can be calculated that we spend over 20 years sleeping. While this may vary from person to person, the fact remains that we spend a long time on sleep. It’s a question that could prompt us to value sleep more.

Which animal has the highest blood pressure?

Which animal has the highest blood pressure?
  1. whale
  2. giraffe
  3. Elephant
See the answer

giraffe

Giraffes have extremely long necks, and considerable pressure is needed to send blood through the neck to the brain. In fact, giraffes have powerful hearts, and their maximum blood pressure is said to be more than twice that of humans. This high blood pressure is necessary to keep pushing blood more than about two meters upward. It can be considered an evolutionary adaptation arising to maintain blood flow to the brain.

What kind of hospital is more numerous than convenience stores?

What kind of hospital is more numerous than convenience stores?
  1. dentist
  2. Internal medicine
  3. ophthalmology
See the answer

dentist

In Japan, dentists are well known for outnumbering convenience stores. Because dental clinics tend to be rooted in their local communities, their numbers are high nationwide. Meanwhile, many other types of medical facilities—such as internal medicine and ophthalmology clinics—also exist in large numbers according to each region’s population and demand. However, compared to the total number of dental clinics, dentists generally stand out as being far more numerous.