This is a normal review of the article for journal ? (Yes or Not):
Reviewer #3: In the manuscript entitled "TO QUESTION OF CALCULATION ..." the fundamental assumptions are not well justified. I do not recommend publication.
It is not possible to tell whether it is normal or not without knowing the details. The referee could have explained his/her position in more detail. It depends on whether the referee is a real expert of the subject or not. It is to be decided by the editor who decides the number and selection of the referees. At the journal where I have contacts we usually "use" at least 3 referees for decision, in case of wide disagreement sometimes even more. It requires a lot of work, as sometimes we have to send our request to op to 20 potential referees. Sometimes we decide rejection based on a single negative opinion (against say, 2-3 positive opinions) if we know and appreciate the referee.
It also depends on the personality of the referee. Personal antipathy or other cases of prejudice should be excluded, if possible. It would be more polite to write some arguments, anyway. Just not all referees are polite. It is also a question, whether the MS gets rejected on the basis of a single, brief, negative opinion or not. Even in this case it may be helpful to indicate to the editor, that the decision may be hasty. It may be possible to ask for more detailed explanation. Sometimes it works, sometimes not. It depends on the character of the editor.