If 1+9+8=1, what is 2+8+9?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

What does this below rebus puzzle mean?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?