1 |
For any set X, X∪X is |
15
15i
-15i
-15
|
2 |
What is the conjugate of -7 -2i ? |
-7 + 2i
7 + 2i
7-2i
√53
|
3 |
If Z1 = √-36, Z2=√-25, Z3= √-16, then what is the sum of Z1, Z2 and Z3 ? |
√3 I
√7
-2-1
√5
|
4 |
If Z1 = 1+i, Z2 = 2+3i, then |Z2-Z1|=?
|
√3 I
√7
-2-1
√5
|
5 |
If Z= (1,2). tjem Z-1 = ? |
(0.2, 0.4)
(-0.2, 0.4)
(0.2, -0.4)
(-0.2, -0.4)
|
6 |
The value of x, and y, when (x+iy)2=5+4i |
X=2, y=-1
X=-2, y=1
X=2, y=-i
X=2, y=2
|
7 |
π/3 is |
A positive integer
A negative integer
A natural number
An irrational number
|
8 |
Every prime number is also |
Rational number
even number
Irrational number
multiple of two numbers
|
9 |
3/2 is |
An irrational number
Whole number
A positive integer
A rational number
|
10 |
√23 is |
A rational number
A irrational number
An even integer
A factor of 36
|
11 |
6 is |
A prime integer
An irrational number
A rational number
A odd integer
|
12 |
0 (zero) is |
A irrational number
A rational number
A negative integer
A positive number
|