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?
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
How many times can you subtract the number 5 from 25?
As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.
You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth. How long would it take for the machine to cut the roll if each cut took 4 secs?
If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?
What work can one never finish?
What animal walks on four legs in the morning, two legs during the day, and three legs in the evening? Oedipus, the king of Thebes, figured out the answer to the riddle:
Why do people go to bed?
What number does the below three word/phrase identify and why? 1. Deck 2. Year 3. Singing in the Rain
What makes this number unique: 8,549,176,320?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.