I make two people out of one. What am I?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Decode below rebus
D
N
A
T
S , D

Take one out and scratch my head, I am now black but once was red. What am I?

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

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I cannot talk, but I always reply when spoken to. What am I?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What building has the most stories?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?