[For Seniors] Great for killing time! A fun three-choice trivia quiz

yellow

If you do sewing, you’ve probably had the frustrating experience of not being able to thread a needle. In fact, making the background color yellow makes it easier to get the thread through. The reason is that yellow is an advancing (expanding) color. The yellow visible through the needle’s eye appears larger, making the eye of the needle easier to see.

hand cream

Because oil-based markers are oil-based stains, they tend to mix easily with other oil-based substances. For this reason, if you rub an oil-based hand cream into the stained area, the ink will bond with the hand cream. Then, simply wipe the area you rubbed with a tissue, and it will come off cleanly.

lick ice

When you lick ice, your tongue’s sensation is temporarily numbed, making it harder to perceive bitterness.

Rotate the egg

Place the egg on a flat surface like a table and try spinning it on its side. If it spins smoothly, it’s a hard-boiled egg. If it wobbles and spins irregularly, it’s a raw egg. Because the inside of a raw egg is liquid, its center of gravity is unstable, so it won’t spin as cleanly as a hard-boiled egg.

20 sheets

Everyone, are you familiar with the Act on Currency Units and Issuance of Currency? Under this law, payments using coins are permitted up to 20 coins at checkout. It apparently applies to vending machines as well. By the way, the ‘20 coins’ here refers to a single type of coin. For example, suppose you’re paying 5,870 yen at a store with ten 500‑yen coins, eight 100‑yen coins, and seven 10‑yen coins, for a total of 25 coins. In this case, because there are 20 or more coins across multiple denominations, the store cannot refuse to accept the payment.

tomato ketchup

Tomatoes are said to be good for the body because they contain lycopene. Known as a vegetable rich not only in lycopene but also in nutrients like beta-carotene and vitamins, tomatoes were once considered beneficial in the United States in the 1830s, to the point that tomato extract was even patented as a medicine.

under the nose

Sneezing is the body’s defense reaction to expel foreign substances that have entered the nose. This reflex occurs when a nerve called the trigeminal nerve is stimulated. The trigeminal nerve governs facial sensation and extends to the area beneath the nose. Therefore, when you feel a sneeze coming on, pressing firmly under the nose can stimulate the trigeminal nerve and send a signal to the brain that “the sneeze is no longer necessary.”