Aim for a perfect score! A three-choice common knowledge quiz that deepens your understanding
We’re giving you a multiple-choice common-sense quiz with three options!
It’s not just about what you learned at school—we’ve turned various bits of everyday knowledge into quiz questions.
We cover a wide range, from Japanese culture and history to topics about the world.
Even if you think you know something, when it pops up suddenly as a quiz, you might find yourself thinking, “Huh? What was it again?”
If you can’t recall it even though you know it, if you’ve forgotten it, or if you never knew it in the first place, let this quiz be your chance to brush up and deepen your knowledge.
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Aim for a perfect score! A 3-choice common-sense quiz that deepens your knowledge (21–30)
What is the date on which the Pacific War came to an end?
- July 10, 1945
- July 21, 1945
- August 15, 1945
See the answer
August 15, 1945
Japan accepted the Potsdam Declaration issued by the United States, the United Kingdom, and China on August 10, 1945, and unconditionally surrendered on the 15th, bringing the Pacific War to an end. Thereafter, August 15 was designated as End of War Memorial Day, a day to reflect on the mistakes of the war and pledge peace.
When is it considered a good time to take a bath?
- right after a meal
- 30 minutes before bedtime
- 1 to 2 hours before bedtime
See the answer
1 to 2 hours before bedtime
The ideal time to take a bath is said to be 1 to 2 hours before bedtime. Taking a bath temporarily raises your body temperature, and as it gradually drops afterward, you naturally become sleepy, which can improve sleep quality. Bathing at this time also provides a relaxing effect, helping you effectively recover from the day’s fatigue. If you struggle with sleep, try bathing at this timing.
What is the best time to take a bath?
- right after a meal
- 30 minutes before bedtime
- 1 to 2 hours before bedtime
See the answer
1 to 2 hours before bedtime
The best time to take a bath is said to be 1 to 2 hours before bedtime. When a person’s core body temperature drops, it naturally induces sleepiness. After warming your body in the bath, your temperature gradually falls, which helps you fall asleep smoothly and is believed to promote higher-quality sleep. Because it also enhances relaxation, it’s recommended for people who have trouble falling asleep or who want more comfortable sleep to bathe during this time window.
What is the highest-altitude capital city in the world?
- Quito, Ecuador
- Kathmandu, Nepal
- La Paz, Bolivia
See the answer
La Paz, Bolivia
La Paz, Bolivia is known as the highest capital city in the world, at an altitude of about 3,650 meters. Surrounded by the majestic Andes, it features a unique landscape and culture. The elevation varies greatly between the urban center and surrounding areas, so public transportation such as cable cars is well developed. When you go out, be mindful of altitude sickness and enjoy the magnificent mountains and cityscape.
What is the largest organ in the human body?
- skin
- liver
- heart
See the answer
skin
The correct answer is the skin. The skin acts as a barrier that protects our bodies from the external environment. In adults, it covers an area of about 1.6 square meters and accounts for roughly 16% of body weight. The skin has many vital functions, including regulating body temperature, enabling sensation, and defending against pathogens. It is a highly unique organ in terms of both structure and function, and it is an indispensable presence that supports our health every day.