Math Quiz For Class 9th
50 Questions
| Total Attempts: 28
Check your Brain Ability.
Questions and Answers
- 1.The idea of Matrices was given by
- A.
Arthur Cayley
- B.
Briggs
- C.
Al-Khawarzmi
- D.
John Napier
- 2.The order of matrix [ 2 1] is __________
- A.
2-by-1
- B.
1-by-2
- C.
1-by-1
- D.
2-by-2
- 3.
![It is called ____________ matrix: - ProProfs]( "It is called ____________ matrix:")
It is called ____________ matrix:- A.
Zero
- B.
Unit
- C.
Scalar
- D.
Singular
- 4.
![Order of transpose is _____________: - ProProfs]( "Order of transpose is _____________:")
Order of transpose is _____________:- A.
3-by-2
- B.
2-by-3
- C.
3-by-1
- D.
1-by-3
- 5.
![Product of - ProProfs]( "Product of")
Product of- A.
[2x+y]
- B.
[x-2y]
- C.
[2x-y]
- D.
[x+2y]
- 6.
![X is equal to _______________ if : - ProProfs]( "X is equal to _______________ if :")
X is equal to _______________ if :- A.
9
- B.
-6
- C.
6
- D.
-9
- 7.
![Adjoint of - ProProfs]( "Adjoint of")
Adjoint of- A.
Option
- B.
Option
- C.
Option
- D.
Option
- 8.
![For ______ value of x, will be singular matrix. - ProProfs]( "For ______ value of x, will be singular matrix.")
For ______ value of x, will be singular matrix.- A.
3
- B.
-4
- C.
3
- D.
4
- 9.Arthur Cayley introduced the "Theory of Matrices" in ____________
- A.
1854
- B.
1856
- C.
1858
- D.
1860
- 10.Order of square matrix is:
- A.
2-by-2
- B.
1-by-2
- C.
2-by-1
- D.
3-by-2
- 11.A square matrix M is called to be skew symmetric, if:
- A.
Mt=Mt
- B.
Mt=1/M
- C.
Mt=-M
- D.
Mt = M
- 12.When the number of rows is not equal to the number of columns, the matrix is called____________:
- A.
Square matrix
- B.
Rectangular matrix
- C.
Symmetric matrix
- D.
Row matrix
- 13.
![x is equal to, If - ProProfs]( "x is equal to, If")
x is equal to, If- A.
Option
- B.
Option
- C.
Option
- D.
Option
- 14.Real part of 2ab(i+i2) is ______________
- A.
-2ab
- B.
2ab
- C.
3ab
- D.
-3ab
- 15.Ifx,y,z ∈ R, z<0 then, x<y⇒ _____________:
- A.
Xz
- B.
Xz>yz
- C.
Xz=yz
- D.
None of these
- 16.The value of i9 is ____________
- A.
1
- B.
-1
- C.
I
- D.
-i
- 17.Imaginary part of -i(3i+2) is ___________
- A.
-2
- B.
2
- C.
3
- D.
-3
- 18.(3+√ 2)(3-√ 2) is equal to
- A.
7
- B.
-7
- C.
-1
- D.
1
- 19.(27x-1)-2/3
- A.
3√x2/9
- B.
√x3/9
- C.
3√x2/8
- D.
√x3/8
- 20.Write 42/3 with radical sign:
- A.
3√42
- B.
√43
- C.
3√43
- D.
√46
- 21.In 3√35 the radicand is
- A.
3
- B.
1/3
- C.
35
- D.
(35)1/3
- 22.The logarithm of unity to any base is:
- A.
1
- B.
10
- C.
E
- D.
0
- 23.The relation y=logzx implies
- A.
Xy=z
- B.
Zy=x
- C.
Xz=y
- D.
Yz=x
- 24.Log e = __________, where e ≈ 2.718
- A.
0
- B.
0.4343
- C.
∞
- D.
1
- 25.If ax=n, then:
- A.
A=logxa
- B.
X=logna
- C.
X=logan
- D.
A=lognx
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