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Question

Data Interpretation Question on Data Sufficiency

The question below has two statements, I and Impark your answer as
IF z = x + iy, where i = (-1), then
I. z = 0, when x = 0, y20y\neq20
II. If a + bi = c + di, then a = c, b = d

A

Statement I is True, but not the other one.

B

Statement II is True, but not the other one.

C

Both the statements are True.

D

Neither of the statements is True.

Answer

Statement II is True, but not the other one.

Explanation

Solution

It is given in the question that z = xx + iyiy , where ii = (-1)
If x=0x = 0, then z=iyz = iy
From the above equation, we say that the first statement is not true.
II : Ifa+bi=c+di,I fa + bi = c +di, then a=c,b=da = c,b = d
In the above case, If the equation contains both real and imaginary numbers, then the real numbers are equal, and the coefficient of imaginary numbers are also equal.
The correct option is (B)