1 |
If a set is described by listing its elements within brackets is called: |
set builder notation
tabular form
descriptive method
none of these
|
2 |
If a set is described in words, the method is called: |
tabular form
descriptiveform
set builder notation
non-tabular method
|
3 |
A set can be described by: |
one way
two ways
several ways
threeways
|
4 |
The objects in a set are called: |
elements
sub-sets
whole numbers
overlapping sets
|
5 |
Distinct objects means: |
identical objects
not identical
similar
none of these
|
6 |
A set is defined as: |
collection of some objects
well defined collection of some objects
well defined collection of distinct objects
none of these
|
7 |
Modulus of 15 i + 20 is: |
20
15
25
none of the above
|
8 |
The multiplicative identity of real numbers is: |
0
1
2
-1
|
9 |
Multiplicative inverse of -i is: |
i
-i
1
-1
|
10 |
The multiplicative invers of a non-zero real number a is: |
0
-a
a
|
11 |
The additive inverse of a real number is a: |
0
-a
a
|
12 |
The identity element with respect to addition is: |
0
1
-1
0 and 1
|
13 |
If z1 = 4i and z2 = 3 - 9i, then z1 + z2 = |
3 - 5i
3i - 5
7 - 9i
3 + 5i
|
14 |
Every real number is also a/an: |
integer
rational number
irrationalnumber
complexnumber
|
15 |
i2 + 1 = |
-1
0
i
1
|
16 |
Conjugate of -3 -2 i is: |
3 + 2i
-3 + 2i
2 + 3i
-2 + 3i
|
17 |
Conjugate of a- i b is: |
b + ia
-a + ib
-a - ib
a + ib
|
18 |
Conjugate of a + i b is: |
-a + ib
a + ib
-a - ib
a - ib
|
19 |
Conjugate of complex number (-a, -b) is: |
(-a, b)
(-a, -b)
(a, -b)
none of these
|
20 |
The ordered pairs (2, 5) and (5, 2) are: |
not equal
equal
disjoint
empty
|