There is something which you can be arrested for attempting but not for successfully completing.
It is deaf, Dumb and Blind!!! Still, always tells the truth. What is it?
What can you catch but never throw?
What type of tree can I carry in my hand?
What is common among 11, 69, and 88?
The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?
If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?
Here is a conversation between a couple who both are software professionals. Husband: Hey! What is your date of birth? Wife Replied Angrily: It is 591062400 Husband after doing some calculations replied, "Got It". What is the DOB of the wife?
Can you decipher these quotes by Albert Einstein? Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.
By what process could you make a 'Tea-Table' into food?
Count the number of lines in the image below ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.