Can you find the missing piece of the Porsche?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Look at the picture and find out which square is not linked with any of the other squares.

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Can you place three balls such that the equation shown in the picture holds true?

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?

How could a baby fall out of a twenty-story building onto the ground and live?