NDA (II) 2021 · Mathematics
A full Mathematics paper in the UPSC NDA pattern. 120 questions in 150 minutes, with a third of the marks deducted for every wrong answer.
120questions
300marks
+2.5 / −0.83per question
37/61/22easy / medium / hard
Sections and topics
One 120-question Mathematics paper covering algebra, trigonometry, calculus, geometry, vectors, statistics and probability.
Mathematics · 120 questions
- Straight lines6
- Vectors6
- Complex numbers5
- Quadratic equations5
- Binomial theorem4
- Logarithms4
- Plane4
- Statistics4
- Probability4
- Sets3
- Functions3
- Binary system3
- Arithmetic progression3
- Determinants3
Sample question from this paper
Sets · medium
Of employees, can drive, can cook and can do neither. The number of employees who can do exactly one of the two tasks is
- A.
- B.
- C.
- D.
Show answer and solution
Answer: D
At least one task: . Both: . Exactly one: , equivalently . The value 95 includes those who do both.
At least one task: . Both: . Exactly one: , equivalently . The value 95 includes those who do both.