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Published on: 31/12/2022
QB365 provides a detailed and simple solution for every Possible Questions in Class 12 Business Maths Subject - Important 1 Mark MCQ's, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Business Maths and Statistics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
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Take MCQ Business Maths and Statistics Test

1.
lf abasic feasible solution to a transportation problem contains less' than m + n - 1 allocations, it is called a_________basic feasible solution
Optimum
Degenerate
Non-degenerate
Balanced
2.
The multiplicative model bf the time series with the components T, S, C and I is __________
y = T + S x C x I
y = T x S x C x I
y = T + S x C + I
y = T + S + C + I
3.
The marks second by 400 students in mathematics test were nolmally distributed, with mean 65. If 120 students got more marks above 85, the number of students securing between 45 and 65 is ____________
120
20
80
160
4.
If α is the level of significance. then the confidence Co-efficient is
α
1
1-α
1+α
5.
A probability distribution function is defined by \(F(x)\begin{cases} 0,\ x<0 \\ 1-{ e }^{ -x },\ x\ge 0 \end{cases}\) The probability density function is __________
\(f(x)\begin{cases} { 3e }^{ -3x },\quad x\ge 0 \\ 0,\quad x<0 \end{cases}\)
\(\\ f(x)\begin{cases} { 1-e }^{ -3x },\quad x\ge 0 \\ 0,\quad x<0 \end{cases}\)
\(f(X)=0\forall x\)
f(x) = 3e - 3x\(\infty\)
6.
The solution of \(\frac { dp }{ dt } \) = ke-t (k is a constant) is _____________
c-\(\frac { k }{ { e }^{ t } } \) = p
p = ket+c
t = log\(\left( \frac { c-p }{ k } \right) \)
t = logc p
7.
\(\int { { 3 }^{ x+2 } } \) dx = ______________ +c
\(\frac { { 3 }^{ x } }{ log3 } \)
\(\frac { 9\left( { 3 }^{ x } \right) }{ log3 } \)
\(\frac { 3.{ 3 }^{ x } }{ log3 } \)
\(\frac { { 3 }^{ x } }{ 9log3 } \)
8.
The backward difference operator ∇ is ______________
Nepla
Alpha
Gamma
Delta
9.
The area lying above the X-axis and under the parabola y = 4x - x2 is ______ sq. units
\(\frac{16}{3}\)
\(\frac{8}{3}\)
\(\frac{32}{3}\)
\(\frac{64}{3}\)
10.
If the minor of a23 = the co-factor of a23 in |aij| then the minor of a23 is |ay| then the minor of a23 is ________
1
2
0
3
11.
If f (x)=x2 + 2x + 2 and the interval of differencing is unity then Δf (x) _______.
2x −3
2x +3
x + 3
x − 3
12.
For the given points (x0, y0) and (x1, y1) the Lagrange’s formula is _______.
\(y(x)=\frac{x-x_{1}}{x_{0}-x_{1}} y_{0}+\frac{x-x_{0}}{x_{1}-x_{0}} y_{1}\)
\(y(x)=\frac{x_{1}-x}{x_{0}-x_{1}} y_{0}+\frac{x-x_{0}}{x_{1}-x_{0}} y_{1}\)
\(y(x)=\frac{x-x_{1}}{x_{0}-x_{1}} y_{1}+\frac{x-x_{0}}{x_{1}-x_{0}} y_{0}\)
\(y(x)=\frac{x_{1}-x}{x_{0}-x_{1}} y_{1}+\frac{x-x_{0}}{x_{1}-x_{0}} y_{0}\)
13.
If c is a constant then Δc = _______.
c
Δ
Δ2
0
14.
Δf(x) = _______.
f(x+ h)
f(x) − f(x+h)
f(x + h) − f(x)
f (x) − f(x−h)
15.
A type of decision –making environment is _______.
certainty
uncertainty
risk
all of the above
16.
In an assignment problem involving four workers and three jobs, total number of assignments possible are _______.
4
3
7
12
17.
18.
The Penalty in VAM represents difference between the first ________.
Two largest costs
Largest and Smallest costs
Smallest two costs
None of these
19.
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 ______.
\(f\left( \frac { y }{ x } \right) =k.x\)
\(xf\left( \frac { y }{ x } \right) =k\)
\(f\left( \frac { y }{ x } \right) =ky\)
\(yf\left( \frac { y }{ x } \right) =k\)
20.
The complementary function of \(\frac { { d }^{ 3 }y }{ d{ x }^{ 3 } } -\frac { dy }{ dx } \) = 0 is ______.
A + Bex
(A + B) ex
(Ax + B) ex
Aex + B
21.
The complementary function of (D2+ 4)y = e2x is ______.
(Ax +B)e2x
(Ax +B)e−2x
A cos 2x + B sin 2x
Ae−2x+ Be2x
22.
The order and degree of the differential equation \(\left(\frac{d^{2} y}{d x^{2}}\right)^{\frac{3}{2}}-\sqrt{\left(\frac{d y}{d x}\right)}-4=0\) are respectively ______.
2 and 6
3 and 6
1 and 4
2 and 4
23.
R is calculated using ________.
xmax - xmin
xmin - xmax
\(\overset{-}{x}\)max - \(\overset{-}{x}\)min
\(\overset{=}{x}\)max - \(\overset{=}{x}\)min
24.
Which of the following Index number satisfy the time reversal test?
Laspeyre’s Index number
Paasche’s Index number
Fisher Index number
All of them
25.
Least square method of fitting a trend is ________.
Most exact
Least exact
Full of subjectivity
Mathematically unsolved
26.
Factors responsible for seasonal variations are ________.
Weather
Festivals
Social customs
All the above
27.
Type I error is ______.
Accept H0 when it is true
Accept H0 when it is false
Reject H0 when it is true
Reject H0 when it is false.
28.
_______ is a relative property, which states that one estimator is efficient relative to another.
efficiency
sufficiency
unbiased
consistency
29.
In ________ the heterogeneous groups are divided into homogeneous groups.
Non-probability sample
a simple random sample
a stratified random sample
systematic random sample
30.
A __________ of statistical individuals in a population is called a sample.
Infinite set
finite subset
finite set
entire set
31.
\(\int _{ 0 }^{ \frac { \pi }{ 3 } }\)tanx dx is _______.
log 2
0
log\(\sqrt { 2 } \)
2 log 2
32.
\(\int _{ 0 }^{ 1 }{ (2x+1) } dx\) is _______.
1
2
3
4
33.
ഽ\(\frac { { e }^{ x } }{ { e }^{ x }+1 } \) dx is _______.
log\(\left| \frac { { e }^{ x } }{ { e }^{ x }+1 } \right| +c\)
log\(\left| \frac { { e }^{ x }+1 }{ { e }^{ x } } \right| +c\)
log\(\left| { e }^{ x } \right| +c\)
log\(\left| { e }^{ x }+1 \right| +c\)
34.
ഽ2xdx is _______.
2x log 2 + c
2x + c
\(\frac { 2^{ x } }{ log2 } +c\)
\(\frac { log2 }{ { 2 }^{ x } } +c\)
35.
The weights of newborn human babies are normally distributed with a mean of 3.2 kg and a standard deviation of 1.1 kg. What is the probability that a randomly selected newborn baby weighs less than 2.0 kg?
0.138
0.428
0.766
0.262
36.
Forty percent of the passengers who fly on a certain route do not check in any luggage. The planes on this route seat 15 passengers. For a full flight, what is the mean of the number of passengers who do not check in any luggage?
6.00
6.45
7.20
7.50
37.
In turning out certain toys in a manufacturing company, the average number of defectives is 1%. The probability that the sample of 100 toys there will be 3 defectives is ________.
0.0613
0.613
0.00613
0.3913
38.
If Z is a standard normal variate, the proportion of items lying between Z = –0.5 and Z = –3.0 is ________.
0.4987
0.1915
0.3072
0.3098
39.
If c is a constant in a continuous probability distribution, then p(x = c) is always equal to ________.
zero
one
negative
does not exist
40.
If X is a discrete random variable and p(x) is the probability of X, then the expected value of this random variable is equal to ________.
\(\sum { f(x) } \)
\(\sum[x+f(x)]\)
\(\sum { f(x)+x } \)
\(\sum { xp(x) } \)
41.
42.
Value which is obtained by multiplying possible values of random variable with probability of occurrence and is equal to weighted average is called ________.
Discrete value
Weighted value
Expected value
Cumulative value
43.
Area bounded by y = \(\left| x \right| \) between the limits 0 and 2 is ________.
1sq.units
3 sq.units
2 sq.units
4 sq.units
44.
For a demand function p, if \(\int \frac{d p}{p}=k \int \frac{d x}{x}\) then k is equal to ________.
\(\eta \)d
-\(\eta \)d
\(\frac{-1}{\eta_{d}}\)
\(\frac{1}{\eta_{d}}\)
45.
The demand function for the marginal function MR = 100 − 9x2 is ________.
100 − 3x2
100x − 3x2
100x − 9x2
100 + 9x2
46.
Area bounded by the curve y = x (4 − x) between the limits 0 and 4 with x − axis is ________.
\(\frac{30}{3}\) sq.units
\(\frac{31}{2}\)sq.units
\(\frac{32}{3}\) sq.units
\(\frac{15}{2}\) sq.units
47.
If \(\rho (A)\) = r then which of the following is correct?
all the minors of order r which does not vanish
A has at least one minor of order r which does not vanish
A has at least one (r+1) order minor which vanishes
all (r+1) and higher order minors should not vanish
48.
The rank of the matrix \(\left( \begin{matrix} 1 & 1 & 1 \\ 1 & 2 & 3 \\ 1 & 4 & 9 \end{matrix} \right) \) is ________.
0
1
2
3
49.
if T = \(_{ B }^{ A }\left( \begin{matrix} \overset { A }{ 0.4 } & \overset { B }{ 0.6 } \\ 0.2 & 0.8 \end{matrix} \right) \) is a transition probability matrix, then at equilibrium A is equal to ________.
\(\frac { 1 }{ 4 } \)
\(\frac { 1 }{ 5 } \)
\(\frac { 1 }{ 6 } \)
\(\frac { 1 }{ 8 } \)
50.
The rank of m x n matrix whose elements are unity is ________.
0
1
m
n
1.
(c)
Non-degenerate
2.
(b)
y = T x S x C x I
3.
(c)
80
4.
(c)
1-α
5.
(a)
\(f(x)\begin{cases} { 3e }^{ -3x },\quad x\ge 0 \\ 0,\quad x<0 \end{cases}\)
6.
(a)
c-\(\frac { k }{ { e }^{ t } } \) = p
7.
(b)
\(\frac { 9\left( { 3 }^{ x } \right) }{ log3 } \)
8.
(a)
Nepla
9.
(c)
\(\frac{32}{3}\)
10.
(c)
0
11.
(b)
2x +3
12.
(a)
\(y(x)=\frac{x-x_{1}}{x_{0}-x_{1}} y_{0}+\frac{x-x_{0}}{x_{1}-x_{0}} y_{1}\)
13.
(d)
0
14.
(c)
f(x + h) − f(x)
15.
(d)
all of the above
16.
(b)
3
17.
(c)
18.
(c)
Smallest two costs
19.
(a)
\(f\left( \frac { y }{ x } \right) =k.x\)
20.
(a)
A + Bex
21.
(c)
A cos 2x + B sin 2x
22.
(a)
2 and 6
23.
(a)
xmax - xmin
24.
(c)
Fisher Index number
25.
(a)
Most exact
26.
(d)
All the above
27.
(c)
Reject H0 when it is true
28.
(a)
efficiency
29.
(c)
a stratified random sample
30.
(b)
finite subset
31.
(a)
log 2
32.
(b)
2
33.
(d)
log\(\left| { e }^{ x }+1 \right| +c\)
34.
(c)
\(\frac { 2^{ x } }{ log2 } +c\)
35.
(a)
0.138
36.
(a)
6.00
37.
(a)
0.0613
38.
(c)
0.3072
39.
(a)
zero
40.
(d)
\(\sum { xp(x) } \)
41.
(b)
42.
(c)
Expected value
43.
(c)
2 sq.units
44.
(c)
\(\frac{-1}{\eta_{d}}\)
45.
(a)
100 − 3x2
46.
(c)
\(\frac{32}{3}\) sq.units
47.
(b)
A has at least one minor of order r which does not vanish
48.
(d)
3
49.
(a)
\(\frac { 1 }{ 4 } \)
50.
(b)
1
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