CDS 120-Day Revision Strategy for OTA & IMA | Maths & GAT English Plan

Prepare for CDS 2025 with Rosemary Institute’s 120-day smart revision plan – separate strategies for OTA and IMA aspirants covering Mathematics and GAT English for top scores!

CDS Exam 120-Day Strategy (Subject-wise)

Separate Plan for OTA and IMA Aspirants

For IMA Aspirants

(IMA aspirants appear for all three papers – English, GK, and Mathematics)

Subject-Wise Breakdown:

Mathematics (100 Marks)

Goal: 65+ Marks

Important Topics:

Algebra (Quadratic equations, Complex numbers)
Trigonometry (Heights and Distances)
Geometry (Circles, Triangles, Lines)
Mensuration (2D and 3D)
Statistics and Data Interpretation
Number System (LCM, HCF, Remainders)
Time, Speed and Distance, Time and Work
Simple and Compound Interest, Profit and Loss
Probability, Permutation and Combination

120-Day Strategy:

Phase 1 (Days 1–40):

Master NCERT 10th, 11th basics
Focus on concept clarity and important formulas
Solve topic-wise easy-level questions

Phase 2 (Days 41–80):

Advance Practice: Moderate to Difficult Level
Solve 3–5 previous years’ question papers
Daily 2 topics revision + 30 MCQs solving

Phase 3 (Days 81–110):

Full-length Maths Mocks (alternate days)
Revision of short tricks, tips
Maintain a “Mistake Notebook” for revision

Phase 4 (Days 111–120):

Final revision of formulas
Practice 5 Full-Length Mock Tests + error review

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English (100 Marks)

Goal: 80+ Marks

Important Topics:

Vocabulary (Synonyms, Antonyms, Cloze Test)
Grammar (Spotting Errors, Sentence Improvement)
Reading Comprehension
Para Jumbles
Fill in the Blanks

120-Day Strategy:

Phase 1 (Days 1–40):

Strengthen Grammar: Rules + Practice Exercises
Build Vocabulary: Learn 15-20 new words daily
Solve basic-level Reading Comprehensions

Phase 2 (Days 41–80):

Previous Year Papers solving (focus on GMA topics)
Sectional tests on Vocabulary + Grammar separately

Phase 3 (Days 81–110):

Full English Mock Tests every 3 days
Focus on weak areas (use error log sheets)

Phase 4 (Days 111–120):

Vocabulary recap
Solve at least 5 Full-Length English Mocks

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For OTA Aspirants

(OTA aspirants appear for only English + GK — no Maths)

Subject-Wise Breakdown:

English (100 Marks)

Goal: 85+ Marks (higher accuracy needed for OTA!)

Same Topics as IMA English, but even more emphasis on:

Advanced Grammar error detection
Reading Comprehension speed
Strengthening Synonyms-Antonyms + One Word Substitution

120-Day Strategy:

Phase 1 (Days 1–40):

Grammar rulebook revision
Vocabulary-building (15-20 words/day)
Small comprehension exercises

Phase 2 (Days 41–80):

Solve Previous Year CDS English Papers
Weekly sectional tests: Grammar & RC separately

Phase 3 (Days 81–110):

Full Mock Tests twice per week
Track and improve wrong question patterns

Phase 4 (Days 111–120):

Final flashcard revision (Vocabulary + Idioms)
5 Full-Length English mocks with detailed analysis

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Ideal Daily Timetable for Both OTA & IMA Aspirants

Time Slot	Task
6:00 AM – 8:00 AM	Grammar Rules + Vocabulary Learning
10:00 AM – 12:00 PM	Mathematics (only for IMA) / English Comprehension Practice
4:00 PM – 6:00 PM	PYQs + Practice Sets Solving
8:00 PM – 9:00 PM	Mock Test Analysis + Revision

Final Key Tips:

Previous Year Papers = Goldmine. Solve at least the last 10 years.
Mock Tests = Key to improving speed + accuracy.
Revision Cycles = Every 30 days, complete 1 round of revision.
GK (for both) = Spend at least 30 min daily for Current Affairs prep (if you want, I can give a GK strategy separately).