What year comes next in this sequence: 1973 1979 1987 1993 1997 1999
What year comes next in this sequence: 1973 1979 1987 1993 1997 1999
✨ 2003: they are prime years
L3 · math
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Hard Riddles for Kids and Tweens — Page 5
90 hard riddles
Page 5 of 5
When one does not know what it is, then it is something; but when one knows what it is, then it is n
When one does not know what it is, then it is something; but when one knows what it is, then it is nothing.
Hint: When one does not know what it is…
✨ A riddle
L3 · brain teaser
Where are the lakes that are referred to in the “Los Angeles Lakers?
Where are the lakes that are referred to in the “Los Angeles Lakers?“
✨ In Minnesota. The team was originally known as the Minneapolis Lakers and kept the name when they moved west
L3 · logic
Which clock works best, the one that loses a minute a day, or the one that doesn't work at all?
Which clock works best, the one that loses a minute a day, or the one that doesn’t work at all?
Hint: Which clock works best…
✨ The one that doesn't work is best as it will always be correct twice a day, but the one that loses a minute a day will not be correct again for 720 days (losing 720 minutes or 12 hours)
L3 · brain teaser
Which triangle has a bigger area: 1
Which triangle has a bigger area: 1. A triangle with sides measuring 300, 400, and 500. 2. A triangle with sides measuring 300, 400, and 700.
Hint: Which triangle has a bigger area: 1…
✨ 1. A triangle with sides measuring 300, 400, and 500. The other triangle cannot exist!
L3 · math
Whoever makes it, tells it not
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
Hint: Whoever makes it…
✨ they are fake Counterfeit money
L3 · brain teaser
Whoever makes it, tells it not
Whoever makes it, tells it not. Whoever takes it, knows it not. And whoever knows it wants it not.
Hint: Whoever makes it…
✨ Counterfeit money
L3 · brain teaser
You are in a room where there are no metal objects except for two iron rods
You are in a room where there are no metal objects except for two iron rods. Only one of them is a magnet. How can you identify this magnet?
Hint: You are in a room where there are no metal objects except for two iron rods…
✨ You can hang the iron rods on a string and watch which one turns to the north (or hang just one rod)
L3 · brain teaser
You are walking down a road and you encounter a fork in the road and you do not know the correct way
You are walking down a road and you encounter a fork in the road and you do not know the correct way to go. There are two men standing at the junction and both know the correct road. One man always lies, and the other man always tells the truth, but you do not know who is the liar and who is the one who tells the truth. You can only ask each man one question, but it must be the same question for both. What is the question that would allow you to get the information necessary to choose the correct path?
Hint: You are walking down a road and you encounter a fork in the road and you do not …
✨ You ask, “Which way would your companion say is the correct path?“
L3 · logic
You have the misfortune to own an unreliable clock
You have the misfortune to own an unreliable clock. This one loses exactly 24 minutes every hour. It is now showing 3:00am and you know that is was correct at midnight, when you set it. The clock stopped 1 hour ago, what is the correct time now?
Hint: You have the misfortune to own an unreliable clock…
✨ 6:00am: since the clock is losing 24 minutes every hour, for every real hour that has passed, the clock will only show 36 minutes
L3 · math