MathsByNITian provides free, step-by-step mathematics study material for SSC, RRB, Banking, Defence, NDA, CDS and Police exams.
Learn concepts and formulas, study solved examples, practice topic-wise questions and prepare with previous year questions — all in one place. Our lessons are written in a simple, exam-focused format, making them suitable for beginners as well as students preparing for competitive exams.
Quantitative Aptitude – Arithmetic
1. Percentage
- Percentage Formula
- Basic Percentage Questions & Answers and Solutions
- Percentage to Fraction Questions & Answers and Solutions
- Fraction to Percentage Questions with Answers and Solutions
- Finding Percentage Questions with Answers and Solutions
- Find the Number Questions | Percentage Questions with Solutions
- Percentage Increase Questions with Answers and Solutions
- Percentage Decrease Questions with Answers and Solutions
- Successive Percentage Questions with Answers and Solutions
- Percentage Practice Questions with Answers | MCQs, Quiz & Practice Set
- Percentage Questions for SSC, RRB, Banking & Defence Exams (Solved PYQs)
- Ratio Formula with Examples and Explanations
- Basic Ratio Questions and Answers with Solutions
- Ratio Word Problems with Answers with Solutions
- Proportion Questions and Answers with Solutions
- Unitary Method Questions and Answers with Solutions
- Direct Proportion Questions and Answers with Solutions
- Inverse Proportion Questions and Answers with Solutions
- Ratio and Proportion Practice Questions with Answers
- Ratio and Proportion PYQs SSC, RRB, Banking & Defence Exams (Solved PYQs)
- Profit and Loss Formula with Examples and Explanations
- Profit and Loss Questions with Answers and Solutions
- Discount Questions with Answers and Solutions
- GST Questions with Answers and Solutions
- Marked Price Questions with Answers and Solutions
- Successive Discount Questions with Answers and Solutions
- Dishonest Shopkeeper Questions and Answers with Solutions
- Profit, Loss & Discount Practice Questions
- Profit, Loss & Discount PYQs SSC, RRB, Banking & Defence Exams (Solved)
4. Simple Interest & Compound Interest
- SI & CI Formula with Examples and Explanations
- Simple Interest Questions with Answers and Solutions
- Compound Interest Questions with Answers and Solutions
- Difference Between SI and CI Questions with Answers and Solutions
- Compound Growth Questions with Answers and Solutions
- Depreciation Questions with Answers and Solutions
- Simple Interest & Compound Interest Practice Questions
- SI & CI PYQs SSC, RRB, Banking & Defence Exams (Solved)
5. Average
6. Age Problems
- Age Formula and Concepts with Examples
- Age Problems Questions with Answers & Solutions
- Age Practice Questions with Answers
- Age PYQs SSC, RRB, Banking & Defence Exams