What is more useful when it is broken?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Replace the question mark with the correct number below.

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Spot what is wrong here in below Picture?

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

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?