A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?
They do not possess flesh or feathers or scales or bone But still, they are blessed with fingers and thumbs of their own.
I have a clock(12-hour format) and both the needles of the clock overlap at 12:00. After how much time, they will overlap again?
I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work. Can you find out who am I?
You knock a Table over in the library, and suddenly 20 eyes are looking at you.
I am under you when I am whole. I shift above you if you remove the first letter. I come all around you if you remove the second as well. Can you tell me who I am?
I have a hole in my back and legs I lack. I live where I can’t breathe and I eat without teeth. What am I?
Which is the correct shadow of the bird?
I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?
What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?
I have no life, but I can die. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.