McqMate
101. |
If the number of elements of the two sets are equal, then they are called |
A. | equal set |
B. | equivalent set |
C. | order set |
D. | subset |
Answer» B. equivalent set |
102. |
If a set has three elements, then its power set consist of ----- elements |
A. | 3 |
B. | 5 |
C. | 6 |
D. | 8 |
Answer» D. 8 |
103. |
Given A in 2x2 and B is 2x4, then the matrix AB will be of the order |
A. | 2x2 |
B. | 2x4 |
C. | 4x2 |
D. | 1x2 |
Answer» B. 2x4 |
104. |
Maximum number of linearly independent rows and columns of a matrix is called |
A. | rank |
B. | adjoint |
C. | determinant |
D. | inverse |
Answer» A. rank |
105. |
Determinant of a 3X3 square matrix is called ----- determinant |
A. | first order |
B. | second order |
C. | third order |
D. | fourth order |
Answer» C. third order |
106. |
The set consisting of all the elements which belong to A as well as B is called |
A. | union |
B. | intersection |
C. | complement |
D. | partition |
Answer» B. intersection |
107. |
The total number of elements of the set of all possible outcome when two coins are tossed |
A. | 2 |
B. | 3 |
C. | 4 |
D. | 6 |
Answer» C. 4 |
108. |
Special type of relation is |
A. | function |
B. | binary relation |
C. | inverse |
D. | none of the above |
Answer» A. function |
109. |
Rectangular array of numbers, variables or parameters is called |
A. | set |
B. | exponents |
C. | matrix |
D. | function |
Answer» C. matrix |
110. |
When the demand for a good is given by Q=50-P, the maximum amount that would be demanded at nil price |
A. | 1 |
B. | 0 |
C. | 40 |
D. | 50 |
Answer» D. 50 |
111. |
Given A={a,b,c} and B={a,d,c}, then AUB will be |
A. | a,b,c |
B. | a,d,c |
C. | c,d,a |
D. | a,b,c,d |
Answer» D. a,b,c,d |
112. |
in a square matrix, the elements lie from left top to right bottom is |
A. | diagonal elements |
B. | row elements |
C. | column elements |
D. | triangular elements |
Answer» A. diagonal elements |
113. |
if all the elements below the leading diagonal are zero in a square matrix, it is |
A. | lower triangular matrix |
B. | identity matrix |
C. | inverse matrix |
D. | upper triangular matrix |
Answer» B. identity matrix |
114. |
conformity condition for matrix addition is that matrices should be |
A. | square |
B. | same order |
C. | equal |
D. | proportional |
Answer» B. same order |
115. |
commutative law of matrix subtraction is |
A. | a+b=b+a |
B. | a-b=b-a |
C. | a-b= -b+a |
D. | a+b=a-b |
Answer» C. a-b= -b+a |
116. |
In matrix algebra (AB)C=A(BC) is |
A. | associative |
B. | commutative |
C. | distributive |
D. | none of the above |
Answer» A. associative |
117. |
In matrix expression of linear equation, AX=B, X denotes |
A. | coefficient matrix |
B. | constants |
C. | identity matrix |
D. | solution vector |
Answer» D. solution vector |
118. |
If in a matrix any two rows or columns are identical or proportional or linearly dependent, the determinant will be |
A. | equal |
B. | zero |
C. | unity |
D. | infinity |
Answer» B. zero |
119. |
Given the demand curve, P=20-0.2Q, the revenue curve will be |
A. | 20-0.2q |
B. | 10-.1q |
C. | 20q-0.2q |
D. | 20q-0.2q2 |
Answer» D. 20q-0.2q2 |
120. |
The slope of isocost line is the ratio of |
A. | quantities |
B. | input prices |
C. | costs |
D. | product prices |
Answer» B. input prices |
121. |
The line of linear equation should begin from |
A. | the origin |
B. | x axis |
C. | y axis |
D. | any of the above |
Answer» D. any of the above |
122. |
For a matrix minor of element M33 =25, the cofactor is |
A. | -25 |
B. | 25 |
C. | 0 |
D. | 33 |
Answer» B. 25 |
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