Quadratic Equation Important Questions for PNB LBO 2025 Exam

Quadratic Equations are one of the most frequently asked topics in the Quantitative Aptitude section of the PNB LBO 2025 Exam. These questions test your calculation speed, factorisation skills, and understanding of number properties. With the right shortcuts and consistent practice, candidates can easily score full marks in this chapter. To help you strengthen this topic, we have compiled the most important Quadratic Equation questions based on the latest exam pattern.

Download Important Quadratic Equation Questions PDF

To boost your preparation, we have prepared a free PDF containing high-quality, exam-oriented Quadratic Equation questions along with detailed solutions. This PDF covers easy, moderate, and high-level questions that are extremely useful for the PNB LBO exam. Click the link below to download and practice these questions daily to improve speed and accuracy.

Important Questions PDF Link with detailed Solution

Types of Quadratic Equation Questions

1. Variable Comparison Type:
   You are given two equations, one in x and another in y. You must compare their roots and select the correct relationship:
   • x > y
   • x < y
   • x ≥ y
   • x ≤ y
   • x = y or no relation
2. Simple Root Finding:
   Some sets directly ask for the roots of a quadratic equation. These are usually easier and can be solved through factorisation or the formula method.
3. Mixed Arithmetic Quadratic Problems:
   In RRB PO Mains, quadratic equations can appear in caselets or arithmetic-based data interpretation sets, often combined with ratio, average, or percentage concepts.

Strategy to Solve Quadratic Equation Questions

Follow the steps below to solve quadratic equations faster during the exam:

Step-wise Master Strategy

• Understand the Standard Form
  Convert equations into the standard form: ax² + bx + c = 0
• Factorize Quickly
  Split the middle term to identify two factors whose sum = b and product = ac
• Use the Sign Trick
  
  • If c is positive, both roots have the same sign
  • If c is negative, the roots have opposite signs
• Compare Roots Carefully
  After finding the roots, compare them with the other equation as required
  (>, <, =, ≤, ≥, or no relation)
• Avoid Solving Completely When Not Needed
  Sometimes comparison is possible without calculating exact roots—use logic
• Practice with a Timer
  Try solving each question in 20–25 seconds to improve exam-time efficiency

Join our exclusive Telegram group where our experts are ready to answer all your queries, guide you in banking exam preparation, and give personalised tips to boost your success. Get access to real-time solutions, expert advice, and valuable resources to improve your study journey. [Click here to join now