What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

When it's bad luck to meet a black cat?

You can see three almost identical images below. Can you spot the odd one out from them?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Can it be possible to build a house that has all its four walls facing towards the South?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Can you spot the hidden girl in the picture below?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?