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

2, 3, 5, 9, 17, _ What is the next number in the sequence?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

What is Luis Suarez's (Soccer Player) favorite tea?

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

What two things can you never eat for breakfast?

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

Explain how?

Why is a river so rich ?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?