Which number should replace the question mark?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

In the image below, can you find the value of an angle(y)

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What part of the chicken has the most feathers?

What does the below rebus puzzle mean?

What do you see in the image below

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

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?