Move four matchsticks to the below square to form three squares?

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

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

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 man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

Why is 6 afraid of 7?

Why do we preferably have round manhole covers and not square ones?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle