They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

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.

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

What you cannot hold but it is yours?

What has one letter and starts with an E?

Can you solve this picture maths equation?