I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Why is the Hole below a Lock?

Why are televisions attracted to people?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

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

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

If a wheel has 54 spokes, how many spaces are there between the spokes?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?