CDS (II) 2021 · Elementary Mathematics
A full Elementary Mathematics paper in the UPSC CDS pattern: 100 questions in 2 hours, with a third of the question's marks deducted for every wrong answer. Arithmetic, algebra, trigonometry, geometry, mensuration and statistics at Class 10 level, against the clock.
100questions
100marks
2 hoursno calculator
41/47/12easy / medium / hard
Topics in this paper
Mathematics · 100 questions
- Trigonometric identities6
- Number system5
- Quadratic equations5
- Heights and distances5
- Triangles5
- Circles5
- HCF and LCM4
- Percentage4
- Time, speed and distance4
- Mean4
- Profit and loss3
- Simple and compound interest3
- Time and work3
- Averages3
Sample question from this paper
HCF and LCM · medium
The greatest number which divides 458 and 698 leaving remainder 2 in each case is
- A. 12
- B. 24
- C. 48
- D. 8
Show answer and solution
Answer: B
The number divides and exactly, so it is . , . Taking the gcd of 458 and 698 directly (which is 2) is the trap.
The number divides and exactly, so it is . , . Taking the gcd of 458 and 698 directly (which is 2) is the trap.