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

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

What kind of band never plays music?

Can you solve this picture maths equation?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?