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

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

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Find the next number in the sequence

5 12 24 36 ?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

10+10 and 11+11 can give you the same answer.

Explain how?