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Hassan
1. If all elements in a matrix are zeros, then it is called a
A. column matrix
B. diagonal matrix
C. identical matrix
D. column matrix
2. A matrix with only 1 row is called
A. column matrix
B. row matrix
C. identical matrix
D. column matrix
3. If two matrices A and B have the same order and their corresponding elements are equal then it is called
A. matrix equlity
B. rectangular matrix
C. square matrix
D. matrix equlity
4. The theory of matrices was developed in
A. 1838
B. 1858
C. 1829
D. 1838
5.Any element from the set of real numbers is also called a
A. scalar
B. factor
C. transpose
D. scalar
6. If a matrix ‘A’ has ‘m’ number of columns and ‘n’ number of rows then m × n is said to be
A. transpose of a matrix
B. order of a matrix
C. determinant of a matrix
D. transpose of a matrix
7. A scalar is denoted by
A. n
B. k
C. r
D. n
8.In matrices (AB)−1 equals to
A. B−1
B. A−1
C. B−1 A−1
D. B−1
9.If the number of rows in A matrix are equal to the number of column in B matrix, then A and B are comfortable for
A. product
B. division
C. transpose
D. product
10.If Bt = B then the matrix B is called
A. symmetric
B. skew symmetric
C. Transpose
D. symmetric
11.In a unit matrix, number of diagonal elements are
A. 2
B. 3
C. 1
D. 2
12.The idea of matrices was introduced by Arthur Caylet in
A. 18th century
B. 19th century
C. 20th century
D. 18th century
13. A square matrix in which all the elements except at least the one element in the diagonal are zeros is said to be a
A. identical matrix
B. null/zero matrix
C. column matrix
D. identical matrix
14. A square or a rectangular array of numbers written within square brackets in a definite order in rows and columns is known as
A. formula
B. determinant
C. matrix
D. formula
15. If A(BC) = (AB)C, then with respect to multilpication this law is called
A. Inverse law
B. associative law
C. cramers law
D. Inverse law
16.In matrices (AB)−1 equals to
A. A−1
B. B−1
C. A−1 B−1
D. A−1
17. A zero matrix ‘O’ of order m-by-n and A + O = O + A = A, then the matrix is said to be
A. additive identity matrix
B. null/zero matrix
C. symmetric
D. additive identity matrix
18. In real numbers, the additive identity is
A. 1
B. 3
C. 0
D. 1
19. In matrices, the columns are denoted by
A. A
B. B
C. R
D. A
20. If A is a matrix of order(m - by - n) then a matrix(n - by - m) obtained by interchanging the rows and columns of A is called the
A. additive inverse of A
B. transpose of A
C. determinant of A
D. additive inverse of A
21.If At = −A then A is said to be
A. square matrix
B. skew symmetric
C. transpose
D. square matrix
22. Generally the elements of a matrix are denoted by
A. numbers
B. capital letters
C. small letters
D. numbers
23. A surd which has rational factor other than unity and the other factors being irrational is said to be
A. mixed surd
B. pure surd
C. similar surd
D. mixed surd
24.A number which is not a rational number is called
A. irrational number
B. rational number
C. prime number
D. irrational number
25.The simplest form of √147 should be
A. 7√3
B. 7
C. 3√7
D. 7√3
26. A number which can be expressed in the form(p⁄q), where p and q are integers and q ≠ 0 is called
A. irrational number
B. rational number
C. prime number
D. irrational number
27.Which one is the irrational number ?
A. 2⁄3
B. √4
C. 3⁄5
D. 2⁄3
28. An irrational number that contains a radical sign is known as
A. fraction
B. mode
C. surd
D. fraction
29. A² + b² + c² + 2ab + 2bc + 2ca is equal to
A. (a + b - c)²
B. (a + b + c)²
C. 2abc (a + b + c)²
D. (a + b - c)²
30.A³ + 3ab(a + b) + b³ is equal to
A. (a - b)³
B. (a + b)³
C. a³ + b³
D. (a - b)³
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