Twice ten are six of us, Six are but three of us, Nine are but four of us; What can we possibly be? Would you know more of us? Twelve are but six of us, Five are but four, do you see? What are we?
How is the moon similar to a dollar?
Find the next number in the series below 21 32 54 87 131 ?
They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?
I am a prime number. The double of myself is equal to the square of me. which number am I?
It is a nine-letter word. The exact opposite of the phrase "friendly and outgoing" It contains the word "over". It starts will a vowel. What is it?
There are 2 sand hourglasses. The small one can measure 5 hours and the large one can measure 7 hours. How can we measure 16 hours with 2 sand hourglasses running together ?
He does not have any heart but still, He manages to live. If you kill him, you will eventually die but yet you kill him. He cannot run, who is He?
Why Aeroplane windows are round?
If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
