What is the next number in this series?

4,12,84,3612....

Count the Triangle in the figure given below:

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Where do you go to learn how to make ice cream?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?