What's the only room from which no one can enter or leave

Can you find the six hidden animals in the picture below?

The centre of the third figure is empty. What digit should fit inside?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

who is silent in the parliament?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

When it is alive we sing, when it is dead we clap our hands. What is it?

Can you solve the rebus below?

I am quite hot but become too cold if you remove the first two letters. What am I?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?