You have two buckets of 11 liters and 6 litres. How can you measure exactly 8 litres?
P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?
Which is the correct shadow of the bird?
When I got four, I have it none. When I got two, I have it some. When I got none, I have it all. What is it?
I can write cow in 13 letters. Can You?
2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?
What is the word or phrase?
I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?
They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?
How much will a 38° angle measure when looked at under a microscope that magnifies ten times?
In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special. This date is special as: Date * Month = Year. Can you figure out which year of this century has a maximum number of such dates?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.