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

What seven-letter word has hundreds of letters in it?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

People make me, save me, change me, raise me. What am I?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.