using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Why 1729 is a magic number? Answer Logically.

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

Count the number of squares in the picture below.

Decode the movie name from the below picture?

People put me on the table and cut me but do not eat me. What am I?

There are forty elephants and they have forty-fore heads. How can this be possible?

I have teeth but i don't bite. Who Am I ?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

The centre of the third figure is empty. What digit should fit inside?