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12th Standard Business Maths English Medium Free Online Test Book Back One Mark Questions - Part Three

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. Rank of a null matrix is

    (a)

    0

    (b)

    -1

    (c)

    \(\infty \)

    (d)

    1

  2. \(\int _{ 0 }^{ \infty }{ { x }^{ 4 }{ e }^{ -x } } \)dx is

    (a)

    12

    (b)

    4

    (c)

    4!

    (d)

    64

  3. Area bounded by y = \(\left| x \right| \) between the limits 0 and 2 is

    (a)

    1sq.units

    (b)

    3 sq.units

    (c)

    2 sq.units

    (d)

    4 sq.units

  4. The solution of the differential equation \(\frac { dy }{ dx } =\frac { y }{ x } +\frac { f\left( \frac { y }{ x } \right) }{ f'\left( \frac { y }{ x } \right) } \) is

    (a)

    \(f\left( \frac { y }{ x } \right) =k.x\)

    (b)

    \(xf\left( \frac { y }{ x } \right) =k\)

    (c)

    \(f\left( \frac { y }{ x } \right) =ky\)

    (d)

    \(yf\left( \frac { y }{ x } \right) =k\)

  5. For the given data find the value of Δ3y0 is

    x 5 6 9 11
    y 12 13 15 18
    (a)

    1

    (b)

    0

    (c)

    2

    (d)

    -1

  6. The distribution function F(x) is equal to

    (a)

    P(X-x)

    (b)

    P(X\(\le\)x)

    (c)

    P(X\(\ge\)x)

    (d)

    all of these

  7. In a binomial distribution, the probability of success is twice as that of failure. Then out of 4 trials, the probability of no success is

    (a)

    16/81

    (b)

    1/16

    (c)

    2/27

    (d)

    1/81

  8. The standard error of sample mean is

    (a)

    \(\frac { \sigma }{ \sqrt { 2n } } \)

    (b)

    \(\frac { \sigma }{ { n } } \)

    (c)

    \(\frac { \sigma }{ \sqrt { n } } \)

    (d)

    \(\frac { { \sigma }^{ 2 } }{ \sqrt { n } } \)

  9. Chance variation in the manufactured product is

    (a)

    controllable

    (b)

    not controllable

    (c)

    both (a) and (b)

    (d)

    none of these

  10. A type of decision –making environment is

    (a)

    certainty

    (b)

    uncertainty

    (c)

    risk

    (d)

    all of the above

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TN 12th Standard EM Business Maths free Online practice tests

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