You are in a room with no metal objects except for two iron rods. Only one of them is a magnet. How can you identify which one is a magnet?
Can anyone tell me a word in the English dictionary which has a silent 'z'?
Count the squares in the matchstick puzzle below?
Can you replace the question mark with the correct letter? 6 + 6 + 6 = N 7 + 7 + 7 = E 8 + 8 + 8 = R 0 + 0 + 0 = ?
Twice ten are six of us, Six are but three of us, Nine are but four of us; What can we possibly be? Would you know more of us? Twelve are but six of us, Five are but four, do you see? What are we?
Teacher ask the student 'Why are you standing on that chair in music class ?'. what did student replied ?
Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?
There is so small cabin inside a deep forest. All the forest burned out to worst possible but the inside of the cabin is still the same. However all the person inside the cabin die. How come ?
On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday. Is this even possible? How can it be?
What is black when you buy it, red when you use it, and gray when you throw it away?
Can you find the missing piece of the Porsche?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
