What do you see in the given picture?

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

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

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?

Name a key which is hardest to turn.

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

What do you see in the image below

People put me on the table and cut me but do not eat me. What am I?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???