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Day 176: CDS Maths

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

  1. Question 1

    Mensuration 3D. Asked once: CDS 1 2018 (same type asked 3 times) See all 3 of this type

    93
    The surface area of a closed cylindrical box is 352 square cm. If its height is 10 cm, then what is its diameter ? (Use π=227\pi = \dfrac{22}{7})

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  2. Question 2

    Quadratic Equations. Asked once: CDS 1 2023 (same type asked 3 times) See all 3 of this type

    12
    If a, b, c are non-zero real numbers such that a+b+c=0a + b + c = 0, then what are the roots of the equation ax2+bx+c=0ax^2 + bx + c = 0?

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  3. Question 3

    Statistics. Asked once: CDS 2 2019 (same type asked 3 times) See all 3 of this type

    69
    Which one of the following pairs is correctly matched ?

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  4. Question 4

    Trigonometric Ratios and Identities. Asked once: CDS 1 2020 (same type asked 3 times) See all 3 of this type

    62
    What is sec⁡x−tan⁡xsec⁡x+tan⁡x\sqrt{\frac{\sec x - \tan x}{\sec x + \tan x}} equal to ?

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  5. Question 5

    Circles. Asked once: CDS 2 2017 (same type asked 3 times) See all 3 of this type

    66
    The distance between the centres of two circles having radii 9 cm and 4 cm is 13 cm. What is the length of the direct common tangent of these circles ?

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