Basics Mathematics (3300001) MCQs

MCQs of Determinants and Matrices

Showing 11 to 20 out of 56 Questions
11.

If A3×2  and B2×2  then numbers of elements in A×B=____

જો A3×2  અને  B2×2  હોય તો  A×B ના ઘટકોની સંખ્યા =____

(a)

0

(b)

5

(c)

6

(d)

5

Answer:

Option (c)

12.

If A is singular matrix then ______

જો A આસામાન્ય શ્રેણિક હોય તો ______

(a)

A = AT

(b)

A =- AT

(c)

A =I

(d)

A=0

Answer:

Option (d)

13.

If A=0-110 then A4=_____

જો A=0-110 તો  A4=_____

(a)

0-110

(b)

1-111

(c)

1001

(d)

1011

Answer:

Option (c)

14.

If A=abcd  then adjA=____

જો  A=abcd  હોય તો  adjA=____

(a)

ad-bc

(b)

a-b

(c)

bc-ad

(d)

0

Answer:

Option (a)

15.

If for square matrix A, A2 - A - I =0 then A-1=_____

જો ચોરસ શ્રેણિક A માટે A2 - A - I =0 તો  A-1=_____

(a)

A-I

(b)

A+I

(c)

I-A

(d)

I

Answer:

Option (a)

16.

Solution of the system of equation 2x+3y=5 and 2x-3y=1 is _____

સમીકરણ સંહતિ  2x+3y=5 અને 2x-3y=1 નો ઉકેલ _____

(a)

(1,-1)

(b)

(1,2)

(c)

(1,-1)

(d)

(1,1)

Answer:

Option (d)

17.

cosθsinθ-sinθcosθ=____

(a)

-1

(b)

1

(c)

2

(d)

0

Answer:

Option (b)

18.

If  x4-22=0  then  x=____

જો  x4-22=0  હોય તો  x=____

(a)

-4

(b)

2

(c)

4

(d)

8

Answer:

Option (a)

19.

Value of log6 3log6 21-1=_____

log6 3log6 21-1 ની કિંમત =_____

(a)

1

(b)

0

(c)

2

(d)

-1

Answer:

Option (a)

20.

If A=1111 then A2=_____

જો  A=1111 તો  A2=_____

(a)

2A

(b)

I

(c)

A

(d)

0

Answer:

Option (a)

Showing 11 to 20 out of 56 Questions