What happened when the wheel was invented?
Which English verb becomes past tense just by rearranging the letters?
What number divided by 4 is the same as that number minus 4?
Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator. Do you ?
What is the difference between a jeweller and a jailer?
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 ?
John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller. I called their home number and one of them picked up. I asked. 'Does John lie?' The person replied with a yes. Whom did I talk with, John or Jacob?
I have eight fingers and two thumbs but I do not live. What Am I?
What has a bottom at the top?
I have a mouth but I don't eat. I have a bank but have no money. I have a bed but i dont sleep. I wave but have no hands. Who Am I ?
Take one out and scratch my head, I am now black but once was red. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
