Find the 8 in the below-given Image.

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

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

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Why do people go to bed?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

During an interview, the interviewer ordered hot coffee for the candidate to relieve the stress. The coffee was kept before him. After a minute, the interviewer asked him, 'What is before you?' He replied 'Tea'.

The candidate was selected immediately. Why?

With the help clues provided in the image, can you find the 5 digit key?

You can see it everyday, But cannot touch it at will. What is it?