There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Can you find the missing piece of the Porsche?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Can you solve the photo plexer logic ?

Can you make a six-letter word using the letters N, A and B ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?