Before Mount Everest was discovered, what was the highest mountain in the world?
Begin with a word, five letters to my name, Remove the first and last but I am the same Take out my middle and still, I remain. What word am I?
Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?
A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?
A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?
During which month do people sleep the least?
I have four wings but can't fly. I express no emotions. I am found on the exact spot every time you look. I keep toiling away with a little sound. Do you know what am I?
Count the number of times the letter "F" appears in the following paragraph: FAY FRIED FIFTY POUNDS OF SALTED FISH AND THREE POUNDS OF DRY FENNEL FOR DINNER FOR FORTY MEMBERS OF HER FATHER'S FAMILY.
Which is the correct shadow of the bird?
Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?
What is the riddle which can be asked all day with a different correct answer each time.
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.