why number 8549176320 is one of a kind?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What seven-letter word has hundreds of letters in it?

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

What goes up but never comes down?

What has 88 keys?

A boy was driving a car, a girl took a lift from her. She asked his name. The boy said - my name is hidden in my car’s number, find it if you can. After this, she got down Car number was [ WV733N ] Can you guess the name now?

What can go through glass without breaking it?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

What does this below rebus puzzle mean?