John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do? But it is quite possible, do you know how?
What is the end of everything?
What four weights can be used to balance from 1 to 30 pounds?
The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total. How much time will he take to have all the five tablets?
What is the next shape from answers A, B, C, and D figure?
Can you name an animal whose killing cannot be performed without spilling your own blood?
What has hands, but can’t clap?
Which fur should we be getting from the Lion?
Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.
Why do Chinese men eat more rice than Japanese men do ?
I have an apple tree , number of apple in this tree get doubles every week. On 30th week , the tree gets completely filled with apples :-) Can you tell me , on what week does my tree is half covered with apples ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.