I do not know who is propagating such things. See the various sets in 2014, 2015, 2016 and 2017 -- hardly any relation for the question difficulty or topics. In fact GATE paper is set by a combined pool of select IIT professors and organizing institute only takes care of the exam conduct. And what all topics to focus more -- entire GATE syllabus must be valued equally -- this time just one word "independent" caused 3 marks and mostly none of the mostly asked questions came. So, if you want to be safe better not try to make such strategies.
