My score in B.Sc is between 65-75%. What should be my minimum CAT percentile to get a call from IIM?

Courseware on Quantitative Aptitude and Quantum CAT by Sarvesh Kumar Verma are the best books for mastering quadratic equations.

Algebra is an important part of CAT Quant section. OF 7-8 Algebra based questions, 1-2 questions are directly based on Quadratic Equation.

Candidates can expect 1 to 2 questions from Quadratic Equations in the CAT exam. CAT Algebra section has about 7 to 9 questions.

You can refer books such as Logical Reasoning by Arihant, Logical and Analytical Reasoning by Ashok Gupta, A Modern Approach to Logical Reasoning by RS Aggarwal and How To Prepare Logical Reasoning for CAT by Arun Sharma.

Although not many questions are asked from Binary Logic, CAT exam aspirants must not ignore this section during preparation as each mark counts.