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Day 140: CDS Maths

5 questions. Try each one first, then open its answer.

  1. Question 1

    Time and Work. Asked once: CDS 2 2018 (same type asked 2 times) See all 2 of this type

    32
    'A' is thrice as good a workman as 'B' and takes 10 days less to do a piece of work than 'B' takes. The number of days taken by 'B' alone to finish the work is

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  2. Question 2

    Mensuration 2D. Asked once: CDS 1 2020 (same type asked 2 times) See all 2 of this type

    94
    ABCDABCD is a trapezium, where ABAB is parallel to DCDC. If AB=4AB = 4 cm, BC=3BC = 3 cm, CD=7CD = 7 cm and DA=2DA = 2 cm, then what is the area of the trapezium ?

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  3. Question 3

    Mensuration 3D. Asked once: CDS 2 2020 (same type asked 2 times) See all 2 of this type

    90
    If p, q, r, s and t represent length, breadth, height, surface area and volume of a cuboid respectively, then what is 1p+1q+1r\frac{1}{p} + \frac{1}{q} + \frac{1}{r} equal to ?

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  4. Question 4

    Polynomials. Asked once: CDS 2 2020 (same type asked 2 times) See all 2 of this type

    10
    (xn−an)(x^n - a^n) is divisible by (x−a)(x - a), where x≠ax \ne a, for every

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  5. Question 5

    Quadrilaterals. Asked once: CDS 2 2022 (same type asked 2 times) See all 2 of this type

    97
    Consider the following statements : 1. In an equilateral triangle, the centroid and centre of circumcircle coincide. 2. Angle bisectors of a cyclic quadrilateral form another cyclic quadrilateral. 3. Every cyclic parallelogram is a rectangle. Which of the statements given above are correct ?

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