How many times can you subtract the number two from the number fifty?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

O_er_t_o_

Complete the missing letters of the given word.

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

Before Mount Everest was discovered, what was the highest mountain in the world?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

I have an eye but still cannot see.

Who am I?

What has to be broken before you can use it?

If an electric train is travelling south, then which way is the smoke going?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?