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Day 174: CDS Maths

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

  1. Question 1

    Number System. Asked once: CDS 1 2019 (same type asked 3 times) See all 3 of this type

    18
    What is the LCM of 13\dfrac{1}{3}, 56\dfrac{5}{6}, 29\dfrac{2}{9}, 427\dfrac{4}{27} ?

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  2. Question 2

    Number System. Asked once: CDS 2 2024 (same type asked 3 times) See all 3 of this type

    89
    XYZXYZ is a 3-digit number, where XX, YY, ZZ are distinct non-zero digits. The difference between the two 3-digit numbers XYZXYZ and YXZYXZ is 90. How many possible values exist for the sum (X+Y)(X + Y) ?

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  3. Question 3

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

    14
    The sum of three prime numbers is 100. If one of them exceeds another by 36, then one of the numbers is

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  4. Question 4

    Quadrilaterals. Asked once: CDS 1 2017 (same type asked 3 times) See all 3 of this type

    75
    Let ABCD be a rectangle. Let P, Q, R, S be the mid-points of sides AB, BC, CD, DA respectively. Then the quadrilateral PQRS is a

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  5. Question 5

    Simple and Compound Interest. Asked once: CDS 1 2019 (same type asked 3 times) See all 3 of this type

    20
    AA lent Rs. 25000 to BB and at the same time lent some amount to CC at same 7% simple interest. After 4 years AA received Rs. 11200 as interest from BB and CC. How much did AA lend to CC ?

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