100 Quant Formula PDF for RRB PO 2025 Exam

Quantitative Aptitude plays a decisive role in the RRB PO 2025 Exam, and having all the important formulas in one place can significantly boost your speed and accuracy. This blog covers the most essential Quant formulas topic-wise, their importance in the exam, and a free downloadable PDF that includes 100+ formulas you must revise before the exam.

Download 100 Quant Formula PDF for RRB PO Exam 2025

In this section, we are providing 100 Quant Formula PDF for RRB PO Exam 2025 questions for the RRB PO Exam 2025. Our experts curate these after analysing previous years’ patterns. Download Now and practice as many questions as you can.

Importance of Quant Formulas in RRB PO

The Quantitative Aptitude section tests a candidate’s ability to apply formulas accurately under time pressure. Most questions in the Prelims and Mains are direct applications of standard formulas with minor variations. Memorising them ensures:

• Faster calculations and reduced dependency on rough work.
• Better understanding of concepts like averages, ratios, and percentages.
• Quicker elimination of wrong options through estimation.
• More accuracy in DI and arithmetic-based word problems.

A strong grasp of formulas often makes the difference between an average and a top-scoring attempt.

RRB PO Quant Section Overview

Both stages require clear conceptual clarity. The Prelims focuses on simplification, number series, and arithmetic, while Mains adds advanced DI, caselets, and application-based arithmetic.

Topic-wise Quant Formula Summary

Below is a breakdown of the key formulas included in the 100 Quant Formula PDF for RRB PO 2025.

1. Percentage

• Percentage = (Value / Total Value) × 100
• Profit% = (Profit / Cost Price) × 100
• Loss% = (Loss / Cost Price) × 100
• Discount% = (Discount / Marked Price) × 100
• Relation: SP = CP × (100 ± Gain or Loss)% / 100

2. Ratio & Proportion

• If a : b = m : n, then a/b = m/n
• When two ratios are equal → a/b = c/d ⇒ ad = bc
• Compound ratio = (a : b) × (c : d) = ac : bd

3. Averages

• Average = (Sum of observations) / (Number of observations)
• If a new value is added: New Average = [(Old Avg × n) + New Value] / (n + 1)

4. Time, Speed & Distance

• Speed = Distance / Time
• Time = Distance / Speed
• Distance = Speed × Time
• For two objects moving in opposite directions: Relative Speed = (Speed1 + Speed2)
• For same direction: Relative Speed = |Speed1 – Speed2|

5. Simple & Compound Interest

• Simple Interest (SI) = (P × R × T) / 100
• Compound Interest (CI) = P × [(1 + R/100)ᵗ – 1]
• Difference between CI and SI (for 2 years) = P × (R² / 100²)

6. Profit & Loss

• Profit = SP – CP
• Loss = CP – SP
• Successive Profit/Loss Formula: x + y + (xy/100)

7. Mixtures & Alligation

• Mean Price = (Quantity1 × Price1 + Quantity2 × Price2) / (Quantity1 + Quantity2)
• Ratio of Quantities = (Cheaper – Mean) : (Mean – Dearer)

8. Partnership

• Profit share = (Capital × Time) of one partner / Total of all partners
• If time differs, use months or years consistently.

9. Time & Work

• Work = Efficiency × Time
• If A can do a work in x days ⇒ A’s 1 day work = 1/x
• When A and B work together ⇒ 1/x + 1/y = 1/Total Days

10. Pipes & Cisterns

• Inlet fills, outlet empties.
• Net 1-hour work = (1/Fill time – 1/Empty time)

11. Mensuration (2D & 3D)

2D Figures

• Rectangle: Area = l × b; Perimeter = 2(l + b)
• Circle: Area = πr²; Circumference = 2πr
• Triangle: Area = ½ × base × height

3D Figures

• Cuboid: Volume = l × b × h
• Cylinder: Volume = πr²h; Curved Surface = 2πrh

12. Algebra

• (a + b)² = a² + 2ab + b²
• (a – b)² = a² – 2ab + b²
• a² – b² = (a + b)(a – b)
• (a + b + c)² = a² + b² + c² + 2(ab + bc + ca)

13. Simplification & Approximation

• Use BODMAS rule strictly.
• Square & cube values up to 30 should be memorized.

14. Number System

• HCF × LCM = Product of two numbers
• Even × Even = Even, Odd × Odd = Odd
• Divisibility rules (2, 3, 5, 9, 11) are essential for series-type questions.

15. Data Interpretation

• Percentage change = [(New – Old) / Old] × 100
• Average across categories = (Sum of all values) / (No. of categories)
• Ratio comparison is often used in bar, pie, or table DI.

How to Study These Formulas Effectively

1. Divide your revision: Study 5–6 topics daily and revise weekly.
2. Use Short Notes: Create your own flashcards for tricky formulas.
3. Apply in Questions: Don’t just memorize—practice 10 questions per topic.
4. Attempt Full-Length Tests: Apply formulas in mock tests to improve retention.
5. Revise Before Exam: Go through the entire sheet at least 3 times in the last week.

Conclusion

A well-prepared Quant section depends on strong formula memory and consistent practice. The 100 Quant Formula PDF for RRB PO 2025 serves as a one-stop solution to strengthen your basics, improve your problem-solving speed, and boost your confidence. To get more such PDFs from more such topics, you can buy our test series, where you can reattempt the full-length mock tests and get a Detailed Comparison with the Topper, compare your Time, Score, Accuracy, Correct/Wrong Answers, and even the Average Performance side-by-side. 

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