Ok, here I am suggesting you the names of some Best books for Karnataka PGCET MBA exam

For reasoning :-
R.S Agarwal
Kiran Publication
Arihant Publication
Upkar Publication

For GK :-
Times of India
Economic times
Pratiyogita Darpan
Gk for Professional by Rau

For Maths:-
Quicker Maths
NCERT Maths
RBD Publication
Ramesh Publication


PGCET Syllabus :
Proficiency in English Language.
Synonyms
Antonyms
One word substitution
Ologies and Ographies
Idioms and phrases
Pairs expressing relationships
Grammar
Famous Books in English Literature
Sentence Correction & Vocabulary

General Knowledge.
Indian Business environment
Global environment
Social events
Cultural events
Economics
Management
Political events
Historical events
Current affairs
Sports
Awards
Personalities & Achievements
Science and technology
Humanities

Test of Reasoning & General Intelligence
Puzzles
Diagrams
Analogy
Logic
Verbal Ability
Analytical Ability
Related Aspects

Quantitative Analysis
Arithmetic
Data Analysis & Interpretation
Statistics
Related Quantitative Aspects