Choose the correct options for the following questions.
The solution of the equation $x^{2}-10x+40=0$ is a
Difficulty: Hard
A:
Rational number
B:
Irrational number
C:
Natural number
D:
Complex number
In a complex number $x+\iota y$ x is called
Difficulty: Hard
A:
Real part
B:
Imaginary part
C:
Even part
D:
Odd part
$a+\iota b$ a is
Difficulty: Hard
A:
Prime number
B:
Complex number
C:
Real number
D:
Irrational number
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