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

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I look at you, you look at me I raise my right, you raise your left. What am I?

Which is the correct shadow of the bird?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Different lights make me strange by changing me into different sizes. What am I?

What is the next number in the series?

15 29 56 108 208 ?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?