A word I know, Six letters contain, Subtract just one, And twelve is what remains.
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?
If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?
You have two rectangular wires. Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn. However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes). So how could you measure 45 minutes ?
In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable
How can you tell a raw egg from a hard-boiled egg?
Find the 8 in the below-given Image.
Can you count the number of triangles in the given figure?
Can you count the number of triangles in the given picture?
A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?
Can you solve this amazing hard number series problem? 7, 8, 10, 12, 16, 18 ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.