Has your natural "doctor" received a degree in medicine or a postgraduate doctorate? If not, then no. The title Doctor is given to those who have completed sanctioned degree courses that are approved to award certain titles.
Yes a real number is a natural since real is natural so anything real is natural and so a real number is natural.
Yes, all natural numbers are real numbers. Natural numbers are a subset of real numbers, so not all real numbers are natural numbers.
The prime number of 11 is a real and natural number
No it's not real.
No. Natural numbers are a proper subset of real numbers.
Natural number are a special kind of real number. They both are large without bounds. For every real number there is a larger natural number and for every natural number there is a larger real number.
Yes. That's where the doctor is from.
Real
No because natural numbers are a subset of real numbers
No. There are infinitely many real numbers for every natural number.
It is not a natural number but it is an integer and a real number.
The real name of the actor who played the Master in Doctor Who was Roger Delgado.