what does the below rebus means?

You can hear me, but you can't touch or see me.

What am I?

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

What has 88 keys?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

You need to move three matchsticks to form three squares. Can you do it?

What has one letter and starts with an E?

If two's company, and three's a crowd, then whats four and five ?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?