A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?
Why 1729 is a magic number? Answer Logically.
I travel all around the world but always stay in the corner. What am I?
Why do Chinese men eat more rice than Japanese men do ?
How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?
What is harder to catch the faster you run?
What does the below image rebus riddle means ?
You measure my life in hours I serve you by expiring I vanish faster when I am thin and slower when I am thick The wind is my energy What am I?
What goes up but never comes down?
Can you solve the photo plexer logic ?
Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.