Real Number (Class X )

12 Questions | Total Attempts: 241

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Real Number (Class X )


Questions and Answers
  • 1. 
    For some integer ‘m’ every odd integer is of form:
    • A. 

      M + 1

    • B. 

      2 m

    • C. 

    • D. 

      2 m + 1

  • 2. 
    H. C. F. of 96 and 404 is
    • A. 

      8

    • B. 

      4696

    • C. 

      96

    • D. 

      4

  • 3. 
    Write the HCF of the smallest composite number and the smallest even number
    • A. 

      4

    • B. 

      0

    • C. 

      1

    • D. 

      2

  • 4. 
    HCF of the smallest composite number and the smallest prime number is
    • A. 

      0

    • B. 

      2

    • C. 

      4

    • D. 

      1

  • 5. 
     If n is a positive integer , then n2 – n is always
    • A. 

      Multiple of 2 and 4

    • B. 

      Prime number 

    • C. 

      Odd number

    • D. 

      Even number

  • 6. 
    What is the HCF of 235 and 395?
    • A. 

      25

    • B. 

      5

    • C. 

      35

    • D. 

      15

  • 7. 
    H.C.F. of two consecutive even numbers is
    • A. 

      2

    • B. 

      0

    • C. 

      4

    • D. 

      1

  • 8. 
    4052 = 420 x q + 272 then value of q is
    • A. 

      12

    • B. 

      7

    • C. 

      8

    • D. 

      9

  • 9. 
    For any two positive integers a and b, there exist unique integers q and r such that a = bq + r, 0 ≤ r < b, if b = 4 then which is not the value of r?
    • A. 

      2

    • B. 

      1

    • C. 

      3

    • D. 

      4

  • 10. 
    For a=n and b=3, which of the following represents the correct mathematical form of Euclid’s division lemma?
    • A. 

      N = q+ 3

    • B. 

      N = 3q - r

    • C. 

      N = 3q +r

    • D. 

      N = 3q  + n

  • 11. 
    Euclid’s division lemma states that if a and b are two positive integers, then there exist unique integers q and r such that:
    • A. 

       a = bq + r, 0 ≤ r ≤ b

    • B. 

      A = bq + r, 0 < r < b

    • C. 

      A = bq + r, 0 < b ≤ r

    • D. 

      A = bq + r, 0 ≤ r < b

  • 12. 
     Complete the statement : Any positive odd integer is of the form 6q + 1, or 6q + 3, or ___________, where q is some positive interger.
    • A. 

      6q + 5

    • B. 

      6q + 4

    • C. 

      6q + 2

    • D. 

      6q 

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