How much will a 38° angle measure when looked at under a microscope that magnifies ten times?
I have lakes with no water, mountains with no stone and cities with no buildings. What am I?
If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?
A word I know has six letters it contains, remove one letter and 12 remain. What is it?
The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be? (3 possible solutions).
I never was there, I am always to be. You have never ever seen me, not ever you will. Yet I am the confidence of everyone. Who Am I?
What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?
People make me, save me, change me, raise me. What am I?
How many times do a clock's hands overlap in a day ?
I have nine bottles of wine and one of the nine bottles is poisoned. I need to find the poisoned bottle with two facts (1) Poison is deadly, only a sip will cost death (2) I have two mice to do so. How should I do it?
What comes Once in a Year Twice in a Month 4 times in a Week 6 times in a Day
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
