If, 20 % 5 = 24 21 % 7 = 33 42 % 6 = 67 Then; 66 % 6 = ?
The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?
How many triangles can you find in this given picture?
What does this below rebus puzzle mean?
Decode the below four famous ciphers: 8P of the SS 1M of the E 1S of the SS 60M in 1H
John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller. I called their home number and one of them picked up. I asked. 'Does John lie?' The person replied with a yes. Whom did I talk with, John or Jacob?
A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it. How can he do that?
What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?
What building has the most stories?
Where do fish keep their money?
Can you convert the number zero(0) into a positive number using just one mathematical operator ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
