How many times do a clock's hands overlap in a day ?
Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?
What can jump higher than a building?
Take 9 from 6, 10 from 9, 50 from 40, and leave 6. How Come ??
A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper. Can you tell me , Which other pages won't be there as well ?
If 2 workers can complete painting 2 walls in exactly 2 hours. How many workers would be needed to paint 18 walls in 6 hours?
Why is a river so rich ?
1. What does: TIM JOB represent? 2. What does: MO_ _ represent?
What came first, the chicken or the egg?
Count the number of triangles in the picture below:
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.