Question # 1

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

AA^-1 = _________:

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A

A^-1

I

0

Order of matrix P = [3 2 5] is:

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3-by-3

3-by-1

1-by-3

1-by-1

The idea of matrices was given by:

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Leibniz

Cauchy

Arthur Cayley

Newton

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9

-6

6

-9

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ad + cb = 0

ad = -bc

ad = bc

ab = cd

A matrix is called ______ matrix, if its number of rows is equal to its number of columns:

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Rectangular

Row

Column

Square

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Let A,B,C be three matrices, then A(B+C) = AB + AC is known as:

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Cumulative property w.r.to '+'

Associative property w.r.t '+'

Left distributive law

Right distributive law

(AB)^-1 =

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A^-1B^-1

AB

BA

B^-1A^-1

The real numbers used in the formation of a matrix are called _______ of the matrix:

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Determinants

Matrix

Set

Element

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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Square

Row

Column

Rectangular

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M

O

-M

I

Which is order of square matrix:

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2-by-2

1-by-2

2-by-1

3-by-2

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Mathematics 9th Class English Medium Unit 1 Online Test MCQs With Answers

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