• October 27, 2021

Mathematics MCQ on Determinants for JEE and Engineering Exam 2021

MCQ on Determinants: To be an expert in JEE Mathematics, it is absolutely necessary to practice and be familiar will all the concepts as well as the questions of different types. This is essential to gain mastery over the subject. We have also often heard the common saying, “Practice Makes a Man Perfect”, hence students have to practice, practice and practice till they master the subject.

MCQ on Determinants

In this post we are providing you MCQ on Determinants, which will be beneficial for you in upcoming JEE and Engineering Exams.

MCQ on Determinants

 

Q1. 


a) 1
b) -1
c) 4
d) No real value

View Answer

d) No real value

Q2.


a) 1
b) -1
c) 0
d) No real value

View Answer

c) 0

Q3.


a) 4
b) -4
c) 0
d) 3

View Answer

c) 0

Q4.


a) 3, 7
b) 2, 7
c) 6, 7
d) 4, 7

View Answer

b) 2, 7

Q5. The number of values of k for which the system of equations (k + 1) x + 8y = 4k, kx + (k + 3) y = 3k − 1 has infinitely many solutions, is _______.
a) 1
b) 2 
c) 3
d) 4

View Answer

a) 1

For infinitely many solutions, the two equations must be identical.

⇒ [k + 1] / [k] = [8] / [k + 3] = [4k] / [3k − 1]

⇒ (k + 1) (k + 3) = 8k and 8 (3k − 1) = 4k (k + 3)

⇒ k− 4k + 3 = 0 and k2 −3k + 2 = 0

By cross multiplication,

[k2] / [−8 + 9] = [k] / [3 − 2] = [1] / [−3 + 4]

k= 1 and k = 1;

k = 1

Q6.


a) x = 1, y = 3
b) x = 0, y = 3
c) x = 3, y = 1
d) x = 0, y = 0

View Answer

d) x = 0, y = 0

Q7.


a) 36
b) 18
c) 24
d) 48

View Answer

c) 24

Q8.


a) 18
b) 24
c) 30
d) 36

View Answer

a) 18


MCQ Link for NEET/JEE
JEE/NEET Physics MCQ Click Here
NEET/JEE Chemistry MCQ Click Here
NEET Biology MCQ Click Here
JEE Math’s MCQ Click Here

 

Notes PDF Link for NEET/JEE
Physics Notes PDF Click Here
Chemistry Notes PDF Click Here
Biology Notes PDF Click Here
Math’s Notes PDF Click Here

 


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By Team Learning Mantras