When we see 2 but call 10?

Using Only Five 5's and any mathematical operator make sum as 37

Can you count the number of blocks in the picture below?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Replace the question mark with the number below given a simple math problem.

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What kind of band never plays music?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?