1
GATE CE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
The matrix $$P$$ is the inverse of a matrix $$Q.$$ If $${\rm I}$$ denotes the identity matrix, which one of the following options is correct?
A
$$PQ = {\rm I}\,\,\,but\,\,\,QP \ne {\rm I}$$
B
$$QP = {\rm I}\,\,\,but\,\,\,PQ \ne {\rm I}$$
C
$$PQ = {\rm I}\,\,\,and\,\,\,QP = {\rm I}$$
D
$$PQ - QP = {\rm I}$$
2
GATE CE 2016 Set 1
MCQ (Single Correct Answer)
+1
-0.3
If the entries in each column of a square matrix $$M$$ add up to $$1$$, then an eigenvalue of $$M$$ is
A
$$4$$
B
$$3$$
C
$$2$$
D
$$1$$
3
GATE CE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Let $$A = \left[ {{a_{ij}}} \right],\,\,1 \le i,j \le n$$ with $$n \ge 3$$ and $${{a_{ij}} = i.j.}$$
The rank of $$A$$ is :
A
$$0$$
B
$$1$$
C
$$n-1$$
D
$$n$$
4
GATE CE 2015 Set 1
Numerical
+1
-0
For what value of $$'p'$$ the following set of equations will have no solutions? $$$2x+3y=5$$$ $$$3x+py=10$$$
Your input ____
GATE CE Subjects
Fluid Mechanics and Hydraulic Machines
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12