Lesson CGL.1: Tier 2 Mains Advanced Quantitative Aptitude

Introduction:
Tier 2 Quantitative Aptitude in SSC CGL is more advanced than Tier 1. It tests higher-level arithmetic, algebra, geometry, data interpretation, and problem-solving skills. Practice, shortcuts, and concept clarity are crucial.

1. Key Topics

• Algebra: Quadratic equations, inequalities, algebraic expressions

• Geometry & Mensuration: Circles, triangles, quadrilaterals, 3D geometry

• Trigonometry: Heights & distances, ratios, identities

• Advanced Arithmetic: Profit-loss, time-speed-distance, ratios, averages, percentage, SI & CI, work & wages

• Data Interpretation: Tables, pie charts, bar graphs, line graphs

2. How to Approach

1. Read the question carefully and identify the topic.

2. Apply shortcuts and formulas wherever possible.

3. For DI, analyze charts and tables first, then calculate systematically.

4. Prioritize accuracy over speed, but keep track of time per question.

3. Common Tips

• Memorize formula sheets and practice shortcut tricks.

• Solve previous years’ Tier 2 papers to understand difficulty level.

• Avoid careless mistakes by double-checking calculations.

4. Practice Questions (Examples)

Solved Example:

• A sum of ₹10,000 is lent at 12% per annum simple interest for 2 years. Find interest.

  • Solution: SI = P × R × T / 100 = 10,000 × 12 × 2 / 100 = ₹2,400

Unsolved Practice:

1. Solve 5 quadratic equations from past Tier 2 papers.

2. Calculate DI from a pie chart representing sales of 5 products.

3. A train covers 480 km in 6 hours. Find average speed.