what does the below rebus means?

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

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Where do fish keep their money?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?