NDA

Month 1: Build the Mathematics base, working through the paper's 120-question format in untimed sets first, and start daily GAT reading so the 600-mark paper gets attention from the beginning. Month 2: Shift to timed section practice, attempting full Mathematics papers of 300 marks and full GAT papers of 600 marks separately, and track how the -0.33 penalty affects your net score on guessed questions. Month 3: Sit complete 900-mark mocks under the full five-hour two-paper schedule on OMR sheets, revise weak areas between attempts, and begin preparing for the five-day SSB Interview stage, which carries 900 marks of its own.

Month 1: Build the base in Mathematics, which carries 120 questions and 300 marks. Work from the class 11 and 12 level textbooks you already use for 10+2, solve each chapter by hand, and keep a separate notebook for formulae and standard results. Set a fixed daily slot for the General Ability Test as well, mainly English reading and daily current affairs notes, without yet timing yourself. Month 2: Continue chapter by chapter coverage in Mathematics and begin structured preparation for the General Ability Test, which carries 150 questions and 600 marks and is therefore the heavier paper. Divide GAT study into an English block and a general knowledge block so neither is left to the last weeks. Start recording accuracy per chapter. Month 3: Shift from learning to solving. Attempt topic-wise question sets in both papers under loose time limits, and begin applying the negative marking of 0.33 marks per wrong answer to your own scoring so that you see the cost of guessing. Revise the Mathematics formula notebook once a week. Month 4: Start full-length sectional papers, one Mathematics paper and one General Ability Test paper in separate sittings each week. Analyse every wrong answer and classify it as a concept gap, a calculation slip or a guess. Rework the concept gaps from the source book the same week rather than postponing them. Month 5: Move to full-length mocks that mirror the written exam in its entirety, 900 marks across two papers with a total duration of five hours, attempted on OMR sheets. Practise the marking of the OMR sheet itself, since the written exam is offline. Alongside this, begin preparing for the SSB Interview, which runs five days and carries 900 marks, by reading on psychological tests, group tasks and the personal interview. Month 6: Reduce fresh study and increase mock frequency, keeping to the same two paper sequence and five hour window each time. Revise the Mathematics formula notebook and your current affairs notes in short repeated passes. Fix an attempt strategy for each paper, deciding in advance how many uncertain questions you will leave, given that wrong answers cost 0.33 marks. Keep SSB preparation running in parallel so that the gap between the written exam and the interview is not spent starting from zero.

Month 1: Fix the target cycle first, since the written exam is held twice a year, and build the timetable backwards from it. Learn the paper structure cold: offline OMR, two papers, five hours, 900 marks in total, with Mathematics carrying 120 questions for 300 marks and the General Ability Test carrying 150 questions for 600 marks. Spend this month only on setting a sustainable daily routine of about three study hours and collecting the subject list from the official notification. Month 2: Begin Mathematics from the first units of the official syllabus and move at roughly one unit a week, writing out solutions in full rather than reading them. Keep a separate notebook for formulas and standard results. Start a 30 minute daily slot for the General Ability Test so the larger paper is never untouched. Month 3: Continue the Mathematics sequence and add a weekly session where the previous three weeks of topics are reworked from scratch. Begin light physical training on a fixed schedule, since the SSB Interview runs five days and carries 900 marks, the same weight as the written exam. Month 4: Raise the General Ability Test slot to one hour daily and work through its syllabus heads in the order the notification lists them. Keep Mathematics running at one unit a week. Take the first untimed topic test in each paper to find where the errors are coming from. Month 5: Introduce timing. Attempt 30 question Mathematics sets and 40 question General Ability sets against the clock, then mark them with the negative marking of 0.33 applied so the real score is visible. Record which questions were guessed and whether the guesses paid. Month 6: Finish the first complete pass of both syllabi this month, even if some units are thin. Shift the daily split so the General Ability Test gets the larger share, matching its 600 mark weight against 300 for Mathematics. Begin practising on OMR sheets rather than plain paper. Month 7: Start the second pass of Mathematics, this time by solving rather than reading, two to three problem sets a day with no reference to solutions during the attempt. Keep one weekly full-length General Ability session. Add written self-description and daily newspaper reading, both of which feed the personal interview later. Month 8: Take one full written paper every fortnight under the real five hour, two paper arrangement. Analyse each one for three days afterwards: topic-wise accuracy, attempt count, and marks lost to the negative marking. Rebuild the weak units identified, do not simply re-read them. Month 9: Move to one full written paper every week. Fix a personal attempt policy for each section, deciding in advance how certain an answer must be before it is marked. Begin preparing for the psychological tests and group tasks of the SSB in a steady weekly slot, and make physical training daily. Month 10: Hold the weekly full paper and spend the rest of the week on error correction only, with no new material introduced. Compress the formula notebook into a short revision set that can be read in under an hour. Increase SSB preparation to two sessions a week, covering group discussion practice and spoken answers about background, studies and interests. Month 11: Revise the entire Mathematics syllabus in three weeks using the compressed notes and solved sets, and the General Ability syllabus alongside it. Keep one full paper a week on OMR sheets, with strict timing across both papers. Confirm eligibility papers and documents are in order so the application stage takes no study time. Month 12: Stop new study. Rotate through revision notes, past attempts and the error log, and take two or three final full papers spaced at least four days apart. Keep the last ten days light, hold the physical routine, and carry the SSB preparation forward, since selection runs through five days of psychological tests, group tasks and the personal interview worth 900 marks.