As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What has to be broken before you can use it?

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?

How is a fly different from a mosquito?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

If 21x = 79x, what is the value of x?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?