Move four matchsticks to the below square to form three squares?
In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road. How did I get sight of the snake?
What's the only room from which no one can enter or leave
81 x 9 = 801. What must you do to make the this equation true?
What work can one never finish?
A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?
How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?
Rectify the following equality 101 - 102 = 1 by moving just one digit.
Buy me, smell me or deliver me, I do not change. Who am I?
O_er_t_o_ Complete the missing letters of the given word.
What is red and smells like blue paint?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
