Use only one mathematical symbol and all numbers (0-9) to get a sum of 99
What does the following represent? N N N N N N N A A A A A A A C C C C C C C
Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?
During which month do people sleep the least?
The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills. How long do you think you have before you run out of pills?
What is in seasons, seconds, centuries and minutes but not in decades, years or days?
The following question it puts forth you: 25 - 55 + (85 + 65) = ? Then, you are told that even though you might think it's wrong, the correct answer is actually 5! Whats your reaction to it? How can this be true?
What is the next number in this series? 4,12,84,3612....
Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator. Do you ?
Can you start the fire using two pieces of wood?
You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.