It belongs to you, but other people use it more than you do. What is it?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

In the four images below, can you find the odd one out?

What do you see in the given picture?