12th Standard English Medium Business Maths Subject Creative 1 Mark Questions with Solution Part - II | QB365

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12th Standard English Medium Business Maths Subject Creative 1 Mark Questions with Solution Part - II

Published on: 23/06/2021

QB365 provides detailed and simple solution for every
Creative Questions in class 12 Business Maths Subject.It will helps to get more idea about question pattern in
every Creative questions with solution.

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.

Questions + Answers key

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Std: 12th Standard - Business Maths and Statistics

chapter: - Creative Questions

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Questions:

Multiple Choice Question

10 x 1 = 10

Seasonal variations are __________

(a)

Selling of umbrellas in rainy season

(b)

cool drinks in summer season

(c)

Prices of electronic gadgets

(d)

Sugarcane in Pongal

If α is the level of significance. then the confidence Co-efficient is

(a)

(b)

(c)

1-α

(d)

1+α

For a standard normal distribution, the mean and variance are _________

(a)

μ,σ²

(b)

μ,σ

(c)

0,1

(d)

1,1

The following table is the probability distribution of random variable X.

X	1	2	3	4	5	6
P(X)	0.1	2k	k	0.2	3k	0.1

The value of k is _______.

(a)

0.2

(b)

0.1

(c)

0.3

(d)

0.4

The methods of funding feasible solution to a transportation problem ___________

(a)

North West Corner Rule

(b)

Least Cost Method

(c)

Hungarian Method

(d)

Vogel's Approximation Method

The integrating factor of \(\frac { dy }{ dx } +\frac { 2y }{ x } \)= x³ is _____________

(a)

2 log x

(b)

\({ e }^{ { x }^{ 2 } }\)

(c)

3log(x²)

(d)

x²

If \(\int { \frac { 1 }{ \left( x+2 \right) \left( { x }^{ 2 }+1 \right) } } \) dx = a log \(\left| 1+{ x }^{ 2 } \right| \) +b tan^-1 x + \(\frac { 1 }{ 5 } log\left| x+2 \right| \) +c then ___________

(a)

\(a=-\frac { 1 }{ 10 } ,b=\frac { -2 }{ 5 } \)

(b)

\(a=\frac { 1 }{ 10 } ,b=\frac { -2 }{ 5 } \)

(c)

\(a=-\frac { 1 }{ 10 } ,b=\frac { 2 }{ 5 } \)

(d)

\(a=\frac { 1 }{ 10 } ,b=\frac { 2 }{ 5 } \)

If A, B are two n x n non-singular matrices, then ___________

(a)

AB is non-singular

(b)

AB is singular

(c)

(AB)^-1 = A^-1 B^-1

(d)

(AB)^-1 does not exit

Δ is ____________

(a)

Commutative

(b)

distributive

(c)

closure

(d)

associative

10.

The Consumer's surplus for the demand function P =f(x) for the quantity X_o and price P_o is_________

(a)

\(\int _{ 0 }^{ x0 }{ f(x)dx-{ p }_{ 0 }{ x }_{ 0 } } \)

(b)

\(\int _{ 0 }^{ x0 }{ f(x)dx } \)

(c)

p₀x₀-\(\int _{ 0 }^{ x0 }{ g(x)dx } \)

(d)

\(\int _{ 0 }^{ p0 }{ f(x)dx } \)

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Answers Key:

Multiple Choice Question

10 x 1 = 10

(b)
0.1

(d)
x²

The non-homogeneous equation are
2x - y + z = 7, 3x + y - 5z = 13, x + y + z = 5

Augmented matrix [A,B]	Elementary Transformation
\(\left( \begin{matrix} 2 & -1 & 1 \\ 3 & 1 & -5 \\ 1 & 1 & 1 \end{matrix}\begin{matrix} 7 \\ 13 \\ 5 \end{matrix} \right) \)
\(-\left( \begin{matrix} 1 & 1 & 1 \\ 3 & 1 & -5 \\ 2 & -1 & 1 \end{matrix}\begin{matrix} 5 \\ 13 \\ 7 \end{matrix} \right) \)	\({ R }_{ 1 }\leftrightarrow { R }_{ 3 }\)
\(\sim \left( \begin{matrix} 1 & 1 & 1 \\ 0 & -2 & -8 \\ 0 & -3 & -1 \end{matrix}\begin{matrix} 5 \\ -2 \\ -3 \end{matrix} \right) \)	\({ R }_{ 2 }\rightarrow { R }_{ 2 }-3{ R }_{ 1 }\) \({ R }_{ 3 }\rightarrow { R }_{ 3 }-2{ R }_{ 1 }\)
\(\sim \left( \begin{matrix} 1 & 1 & 1 \\ 0 & -2 & -8 \\ 0 & 0 & 11 \end{matrix}\begin{matrix} 5 \\ -2 \\ 0 \end{matrix} \right) \)	\({ R }_{ 3 }\rightarrow { R }_{ 3 }-\cfrac { 3 }{ 2 } { R }_{ 2 }\)