How to prepare for NDA 2021 (2) Mathematics

 The Mathematics section of NDA will carry 120 objective type multiple-choice questions. Total marks allotted to this section are 300. Candidates will get two hours 30 minutes to solve the question paper. For the correct answer, candidates will score 2.5 marks while 0.83 marks will be deducted for wrong answers.

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Syllabus and important topics for Mathematics

NDA syllabus comprises topics from Algebra, Matrices and Determinants, Trigonometry, Analytical Geometry of two and three dimensions, Differential Calculus, Integral Calculus and Differential Equations, Vector Algebra and Statistics and Probability. The topic-wise distribution of questions in Mathematics are given below:

Subjects

Number of Question

Algebra

30

Trigonometry

20

Determinants and matrices

10

Analytical Geometry

20

Vector Algebra

10

Statistics and Probability

10

Differential calculus and Integral calculus

20

Total

120

Follow the tips and tricks below for the Mathematics section:

·         Candidates must have a clear understanding of the NDA syllabus and mark the important topics after analyzing the previous years’ question papers.

·         Start preparing the important topics first, at the same time, delegate time for the difficult topics.

·         Solve mock tests to decide how much time to dedicate to each type of question. Also, candidates must solve previous year question papers to get an idea about the type of questions asked in the exam.

·         Candidates must learn tips, tricks and shortcuts for efficient time management.

·         Memorise simple calculations such as squares and cubes.

·         Make notes of shortcuts and formula to refer to during last-minute revision.

·         As there is negative marking in the exam, they should mark the answer only if they are sure about it. Do not guess the answers during the exam.

·         Candidates must refer to good Mathematics books and Coaching classes for NDA preprations.

·         During the final phase of preparation, devote at least three hours for going through the formula.

·         Do not get confused while converting the numbers from decimal to a binary system.

·         Trigonometry can be tricky. So be clear with the concepts such as Properties of Triangles and Inverse Trigonometric functions. Hence, solve such questions at the end.

·         Vector Algebra is the most important unit in the syllabus. Practice questions from Vector Product or Cross Product of two vectors.

·         The statistics part can be easy to crack but be careful while taking the figures.

·         In Probability, the Elementary Theorems, Bayes' Theorem and Binomial Distribution are important.

Best books for Mathematics

It is important that candidates must choose a good book for the Mathematics section of NDA.

·         NCERT Class 11 and 12 books

·         Mathematics for NDA and NA: National Defense Academy and Naval Academy by R S Aggarwal

·         Quantitative Aptitude for Competitive exam by RS Aggarwal

·         NDA and NA examination: Previous solved papers by R Gupta

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