a + ib > c + id can be explained only when

b = 0, c = 0

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b = 0, d = 0

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a = 0, c = 0

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a = 0, d = 0

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Solution

The correct option is B
b = 0, d = 0

We cannot compare 2 complex numbers as they have imaginary parts.

a + ib > c + id can be defined if and only if imaginary parts are zero.

i.e., so, b =0, d = 0

Suggest Corrections

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a + i b > c + i d

a + ib > c + id can be explained only when

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∣ ∣ ∣ \begin{matrix} A - i B & C - i D - C - i D & A + i B \end{matrix} ∣ ∣ ∣

\frac{a + i b}{c + i d} = p + i q

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