I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What does this rebus means ?

PROG WORKRESS

What has one letter and starts with an E?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What kind of band never plays music?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

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

What Word am I Looking For ?