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This mock test of Test: Introduction To Determinants for JEE helps you for every JEE entrance exam.
This contains 10 Multiple Choice Questions for JEE Test: Introduction To Determinants (mcq) to study with solutions a complete question bank.
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QUESTION: 1

Order of a matrix [ 2 5 7 ] is

Solution:

QUESTION: 2

The value of

Solution:

To find the determinant we have to cross mutliply the elements and then substract it.

QUESTION: 3

If , then the value of |2A| is same as

Solution:

Due to the rule if a square matrix is of order n x n then, |kA|= k^(n) |A|

QUESTION: 4

Value of the determinant

Solution:

(a^{2} + b^{2})×1 - (2a) × b

= a^{2} +b^{2} - 2ab

= (a - b)^{2}

i.e. option A

QUESTION: 5

If , then the value of x is

Solution:

Determinant of both matrix is equal

(1×1) -(1×1)= 4*X - 2*1.

0= 4*X-2.

4*X=2.

X=2/4.

X=1/2.

QUESTION: 6

Solution:

Determinant = [(a^{2} + b^{2}).1 - (-2ab)(b)]

QUESTION: 7

If , then the value of x is

Solution:

QUESTION: 8

, then the value of x is

Solution:

QUESTION: 9

The value of is

Solution:

QUESTION: 10

Solution:

### Determinants Test

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