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12th Standard Business Maths English Medium Free Online Test Creative One Mark Questions with Answer Key

12th Standard EM

    Reg.No. :
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Business Maths

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. The rank of an n x n matrix each of whose elements is 2 is

    (a)

    1

    (b)

    2

    (c)

    n

    (d)

    n2

  2. If \(\int { \frac { { 2 }^{ \frac { 1 }{ x } } }{ { x }^{ 2 } } } dx=k{ 2 }^{ \frac { 1 }{ x } }\) +c, then k is

    (a)

    \(-\frac { 1 }{ { log }_{ e }2 } \)

    (b)

    - loge2

    (c)

    -1

    (d)

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

  3. The area of the region bounded by the ellipse

    (a)

    \(\pi\)ab sq.units

    (b)

    \(\frac{\pi a}{b}\) sq.units

    (c)

    2\(\pi\)ab sq.unit

    (d)

    \(\frac{\pi}{2}\) ab sq.units

  4. The differential equation of all circles with centre at the origin is

    (a)

    xdy +ydx = 0

    (b)

    xdy - ydx = 0

    (c)

    xdx + ydy = 0

    (d)

    xdx - ydy = 0

  5. ∇f(x+ 3h)

    (a)

    f{x + 2h)

    (b)

    f(x + 3h) - f(x + 2h)

    (c)

    f(x + 3h)

    (d)

    f(x + 2h) - f(x - 3h)

  6. A random variable X has the following probability distribution

    X 0 1 2 3 4 5
    P(X=x) \(\frac{1}{4}\) 2a 3a 4a 5a \(\frac{1}{4}\)

    Then P(1≤X≤4) is

    (a)

    \(\frac{10}{21}\)

    (b)

    \(\frac{2}{7}\)

    (c)

    \(\frac{1}{14}\)

    (d)

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

  7. The standard normal distribution is represented by

    (a)

    N(0,0)

    (b)

    N(1,0)

    (c)

    N(0,1)

    (d)

    N(1,1)

  8. Probability of rejecting null hypothesis. when it is true is _______

    (a)

    Type I error

    (b)

    Type II error

    (c)

    Sampling error

    (d)

    Standard error

  9. The causes leading to vast variation in the specification of a product are usually due to _____

    (a)

    random process

    (b)

    assignable causes

    (c)

    non-traceable causes

    (d)

    all the above


  10. The total transportation cost is

    (a)

    55

    (b)

    102

    (c)

    101

    (d)

    50

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