How can you write nineteen in a manner that if we take out one, it becomes twenty?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

There was a strange boy who was born before his father. How can this be possible?