9th Standard Maths English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Four

9th Standard

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Maths

Time : 00:15:00 Hrs
Total Marks : 15

    Part A

    15 x 1 = 15
  1. If n(A U B U C) = 100, n(A) = 4x, n(B) = 6x, n(C) = 5x, n(A ∩ B) = 20, n(B ⋂C) = 15, n(A C) = 25 and n(A ⋂ B ⋂ C) = 10 , then the value of x is

    (a)

    10

    (b)

    15

    (c)

    25

    (d)

    30

  2. If A,B,C are non-overlapping sets,then n \(\left( A\cap B\cap C \right) \) is ___________

    (a)

    n(A) + n(B) + n(C)

    (b)

    \(n\left( A\cup B\cup C \right) \)

    (c)

    0

    (d)

    \(n\left( A\cap B \right) \)

  3. The value of \(\bar { 0.03 } \) +\(\bar { 0.03 } \)  is ___________.

    (a)

    \(\bar { 0.09 } \)

    (b)

    \(\bar { 0.09 } \)

    (c)

    \(\bar { 0.09 } \)

    (d)

    0

  4. \(\sqrt{27}\)+\(\sqrt{12}\)=

    (a)

    \(\sqrt{39}\)

    (b)

    5\(\sqrt{6}\)

    (c)

    5\(\sqrt{3}\)

    (d)

    3\(\sqrt{5}\)

  5. Let the polynomials be (A)–13q5 + 4q2 + 12q (B)(x2 +4 )(x2 + 9) (C)4q8 – q6 + 2 (D)-\(\frac {5}{7}\)y12+y3+y5
    Then ascending order of their degree is

    (a)

    A,B,D,C

    (b)

    A,B,C,D

    (c)

    B,C,D,A

    (d)

    B,A,C,D

  6. Which of the following has a factor?

    (a)

    x+ 2x

    (b)

    (x - 1)2

    (c)

    (x + 1)2

    (d)

    (x- 22)

  7. Orthocentre of a triangle is the point of concurrency of _______

    (a)

    medians

    (b)

    altitudes

    (c)

    angle bisectors

    (d)

    perpendicular bisectors of side

  8. PQ and RS are two equal chords of a circle with centre O such that ㄥPOQ=70°, then ㄥOR

    (a)

    60°

    (b)

    70°

    (c)

    55°

    (d)

    80°

  9. If the points A (2,0), B (-6,0), C (3, a–3) lie on the x-axis then the value of a is _____

    (a)

    0

    (b)

    2

    (c)

    3

    (d)

    -6

  10. The centre of a circle is (0, 0). One end point of a diameter is (5, -1), then ______________

    (a)

    \(\sqrt{24}\)

    (b)

    \(\sqrt{37}\)

    (c)

    \(\sqrt{26}\)

    (d)

    \(\sqrt{17}\)

  11. The mean of the square of first 11 natural numbers is

    (a)

    26

    (b)

    46

    (c)

    48

    (d)

    52

  12. The mean of set of numbers is \(\bar{x}\) If each number is multiplied by z, the mean is

    (a)

    \(\bar{X}+z\)

    (b)

    \(\bar{X}-z\)

    (c)

    \(z\bar{X}\)

    (d)

    \(\bar{X}\)

  13. The value of \(\frac { 1-{ tan }^{ 2 }{ 45 }^{ 0 } }{ 1+{ tan }^{ 2 }{ 45 }^{ 0 } } \)

    (a)

    2

    (b)

    1

    (c)

    0

    (d)

    \(\frac { 1 }{ 2 } \)

  14. The capacity of a water tank of dimensions 10 m × 5 m × 1.5 m is

    (a)

    75 litres

    (b)

    750 litres

    (c)

    7500 litres

    (d)

    75000 litres

  15. A collection of one or more outcomes of an experiment is called

    (a)

    Event

    (b)

    Outcome

    (c)

    Sample point

    (d)

    None of the above

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