NDA Preparation
One home for NDA past papers, strategy, and concept notes
Everything in one place — built from the live past-year question bank. Free, no sign-up. Anonymous-friendly.
Strategy guides
See all tenEvidence-led, built per subject from the live question bank — chapter strategy, playbooks, year-on-year drift, and the distractor traps NDA reuses.
Teaching notes
All chaptersConcept-by-concept notes built for both digital-board lectures and student self-study. Each subtopic carries intuition, formula, worked PYQ, and a one-click drill of every past-year question on that subtopic.
NDA Mathematics
Statistics
Mean, median, mode, dispersion, regression — taught concept-by-concept with worked PYQ examples.
25 conceptsOpenNDA Mathematics
Vectors
Magnitude, dot/cross product, scalar triple, vector geometry — small but high-yield NDA Maths chapter.
22 conceptsOpenNDA Mathematics
Probability
Classical probability, event algebra, independence, conditional probability, Bayes — pedagogy-first ramp from defining the sample space to bounds.
24 conceptsOpenNDA Physics
Sound
Mechanical longitudinal waves, v = fλ, frequency bands, SONAR, beats, ear anatomy, echo — 34 PYQs across five subtopics, mostly EASY.
12 conceptsOpen
Build the next paper
Filter the bank by subject, chapter, difficulty, and PYQ year — then download the Question Paper + Answer Key as Word files. Two clicks.
Open the question bank