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Online Tests
Mathematics 9th Class English Medium Unit 1 Online Test MCQs With Answers
Question # 1
Choose an answer
6
3
-3
-6
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Question # 2
AA
-1
= _________:
Choose an answer
A
A
-1
I
0
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Question # 3
If a matrix has m rows and n columns the order of matrix is:
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m-by-m
n-by-n
m-by-n
n-by-m
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Question # 4
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Question # 5
If B+A=A=A+B, the B is called:
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Multiplicative identity
Multiplicative inverse
Additive identity
Additive inverse
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Question # 6
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[8 2]
Product is not possible
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Question # 7
The product in matrices AB, the number of columns of A must be equal to number _______ of B.
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Columns
Entries
Rows
None of these
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Question # 8
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Question # 9
The matrices are denoted by _________ letters of English alphabet:
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Small
Capital
Both a and b
None
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Question # 10
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9
-6
6
-9
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Question # 11
A matrix is called column matrix if it has only one:
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Column
Row
Diagonal
None
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Question # 12
If A, B and C are comfortable for multiplication then A(BC) =
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AB
A(CB)
(AB)C
None
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Question # 13
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M
O
-M
I
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Question # 14
Transpose of row matrix is called ______ matrix:
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Identity
Row
Square
Column
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Question # 15
Choose an answer
[2x + y]
[x - 2y]
[2x - y]
[x + 2y]
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Question # 16
Inverse of identity matrix is _______ matrix:
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A
O
A
-1
Identity
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