CDS (II) 2018 · 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
37/43/20easy / medium / hard
Topics in this paper
Mathematics · 100 questions
- Geometry14
- Mensuration14
- Number system9
- Trigonometry8
- Statistics8
- Heights and distances6
- Percentage5
- Quadratic equations4
- Averages3
- Profit and loss2
- Simple interest2
- Compound interest2
- Mixtures2
- Time and work2
Sample question from this paper
Number system: HCF · medium
The greatest number which divides 319 and 705 leaving remainders 7 and 9 respectively is
- A. 12
- B. 48
- C. 8
- D. 24
Show answer and solution
Answer: D
The required number divides and exactly, so it is their HCF. and , giving HCF , which exceeds both remainders. Dividing 319 and 705 themselves (without subtracting remainders) gives the wrong HCF.
The required number divides and exactly, so it is their HCF. and , giving HCF , which exceeds both remainders. Dividing 319 and 705 themselves (without subtracting remainders) gives the wrong HCF.