CBSE & Upb Class 10th-real Numbers Online Assessment

15 Questions | Total Attempts: 33

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CBSE & Upb Class 10th-real Numbers Online Assessment - Quiz


Questions and Answers
  • 1. 
    Find the HCF of 1848, 3058 and 1331.
    • A. 

      9

    • B. 

      14

    • C. 

      13

    • D. 

      11

  • 2. 
    Find the biggest number which can divide both 324 and 144.
    • A. 

      18

    • B. 

      36

    • C. 

      9

    • D. 

      21

  • 3. 
    Write down the decimal expansions of :  13/ 6250
    • A. 

      0.0208

    • B. 

      0.00208

    • C. 

      0.00512

    • D. 

      0.00416

  • 4. 
    Which of the following is rational?
    • A. 

      (2-√3)^2

    • B. 

       (√2 + √3)^2

    • C. 

       (√2 -√3)(√2 + √3)

    • D. 

      (2√7)/7

  • 5. 
    The product of a rational and irrational number is:
    • A. 

      Rational no.

    • B. 

      Irrational no.

    • C. 

      Both of the above

    • D. 

      None of the above

  • 6. 
    The sum of a rational and irrational number is:
    • A. 

      Rational

    • B. 

      Irrational

    • C. 

      Both of the above

    • D. 

      None of the above

  • 7. 
    If b = 3, then any integer can be expressed as a =
    • A. 

      3q, 3q+ 1, 3q + 2

    • B. 

      3q

    • C. 

      None of these

    • D. 

      3q+1

  • 8. 
    Express 98 as a product of its primes
    • A. 

      2² × 7

    • B. 

      2² × 7²

    • C. 

       2 × 7²

    • D. 

      None of these

  • 9. 
     (6 + 5 √3) – (4 – 3 √3) is
    • A. 

      A rational number

    • B. 

      An irrational number

    • C. 

      A natural number

    • D. 

      An integer

  • 10. 
     If HCF (16, y) = 8 and LCM (16, y) = 48, then the value of y is
    • A. 

      24

    • B. 

      16

    • C. 

      8

    • D. 

      48

  • 11. 
     If LCM (77, 99) = 693, then HCF (77, 99) is
    • A. 

      11

    • B. 

      7

    • C. 

      9

    • D. 

      22

  • 12. 
    The ratio between the LCM and HCF of 5, 15, 20 is:
    • A. 

      9:1

    • B. 

      4:3

    • C. 

      11:1

    • D. 

      12:1

  • 13. 
    987/10500 will have
    • A. 

      Terminating decimal expansion

    • B. 

      Non terminating & Non repeating Decimal expansion

    • C. 

      Non terminating repeating Decimal expansion

    • D. 

      None of these

  • 14. 
    A rational number between 1/2 and 3/4 is:
    • A. 

      2/5

    • B. 

      5/8

    • C. 

      4/3

    • D. 

      1/4

  • 15. 
    The number π is:
    • A. 

      A Natural Number

    • B. 

      A Rational Number

    • C. 

      An Irrational Number

    • D. 

      A Whole Number

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