Find the next number in the series? 2, 12, 36, 80, 150, 252, 392, _ ?
There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units. Can you calculate the dimensions of this box with the given data?
Can you write down eight eights so that they add up to one thousand?
Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?
I am a five-letter word under you, Remove the first letter and I am above you, Remove the second as well and I am around you. Who am I?
How many letters are in the alphabet?
Which tank will fill first?
I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?
You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?
As easy as you can get into me, it is as hard to get out of me. Do you know what I am?
Move four matchsticks to the below square to form three squares?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
