This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am white when I am dirty, and black when I am clean. What am I?

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

What always comes into a house through the keyhole?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

Can you find the dog hidden in a group of pandas?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?