What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age. How old will John be two years from now?
Can you name an animal whose killing cannot be performed without spilling your own blood?
Find three numbers such that * When we multiply three numbers, we will get the prime numbers. * The difference between the second and the first number is equal to the third and second.
How can you take 2 from 5 and leave 4?
Replace the question mark with the correct number. 2 + 2= 4 3 + 3= 18 4 + 4= 48 5 + 5= ?
You need to move three matchsticks to form three squares. Can you do it?
In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?
Can you figure out the logic I used to decide the order of the following words: gun, shoe, spree, door, hive, kicks, heaven, gate, line, den
What can you catch but never throw?
Out of four images which one is the odd one out?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
