ECAT Pre Engineering Mathematics chapter wise online mcq test with answers for Mathematics

Mathematics ECAT Pre Engineering Online Test

Sr. #	Questions	Answers Choice
1
2
3
4		all are correct
5
6	Rank of matrix [1 3 5 0] is	1 3 2 4
7		5 -5 none
8		k3 0 3k k6
9	Which of the following is skew symmetric matrix
10	If A is skew Hermitian Matrix then which of the following is not skew Hermitian matrix	A2 A5 A3 A7
11
12		all
13		(2x+a+b+c) (a+b+c) (a+b+c+x) 0
14		16 256 64 1024
15		I3 rI3 r none
16		5 15 10 20
17		(2x4) (2x7) (2x3) (7x2)
18
19		3K K2 K3 K
20
21	Under multiplication, solution set of is	Groupoid Abelian group Semi group All of these
22	Identity w.r.t intersection in a power set of any set is	∅ Set itself Singleton set {0}
23	Which symbolic notation represent unary operation ?	- ∨ ∧ ⇔
24	Which conjunction is not true ?
25	Power set of difference set N-W is	Empty set Infinite set Singleton set {0,∅}
26		A onto B both a & c A into B none of these
27		a-b=ab ab=a a+b=ab
28	Group of none-singular matrices under multiplication is	None-Abelian group Semi group Abelian group None of these
29	Z is a group under	Subtraction Multiplication Addition None of these
30	The identity element of a set X with respect to intersection in P(x) is	X Does not exist ∅ None of these