1
JEE Main 2024 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

Let $$z$$ be a complex number such that $$|z+2|=1$$ and $$\operatorname{lm}\left(\frac{z+1}{z+2}\right)=\frac{1}{5}$$. Then the value of $$|\operatorname{Re}(\overline{z+2})|$$ is

A
$$\frac{2 \sqrt{6}}{5}$$
B
$$\frac{24}{5}$$
C
$$\frac{\sqrt{6}}{5}$$
D
$$\frac{1+\sqrt{6}}{5}$$
2
JEE Main 2024 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

If the set $$R=\{(a, b): a+5 b=42, a, b \in \mathbb{N}\}$$ has $$m$$ elements and $$\sum_\limits{n=1}^m\left(1-i^{n !}\right)=x+i y$$, where $$i=\sqrt{-1}$$, then the value of $$m+x+y$$ is

A
12
B
4
C
8
D
5
3
JEE Main 2024 (Online) 6th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

If $$z_1, z_2$$ are two distinct complex number such that $$\left|\frac{z_1-2 z_2}{\frac{1}{2}-z_1 \bar{z}_2}\right|=2$$, then

A
either $$z_1$$ lies on a circle of radius $$\frac{1}{2}$$ or $$z_2$$ lies on a circle of radius 1.
B
$$z_1$$ lies on a circle of radius $$\frac{1}{2}$$ and $$z_2$$ lies on a circle of radius 1.
C
either $$z_1$$ lies on a circle of radius 1 or $$z_2$$ lies on a circle of radius $$\frac{1}{2}$$.
D
both $$z_1$$ and $$z_2$$ lie on the same circle.
4
JEE Main 2024 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Let $$S_1=\{z \in \mathbf{C}:|z| \leq 5\}, S_2=\left\{z \in \mathbf{C}: \operatorname{Im}\left(\frac{z+1-\sqrt{3} i}{1-\sqrt{3} i}\right) \geq 0\right\}$$ and $$S_3=\{z \in \mathbf{C}: \operatorname{Re}(z) \geq 0\}$$. Then the area of the region $$S_1 \cap S_2 \cap S_3$$ is :

A
$$\frac{125 \pi}{24}$$
B
$$\frac{125 \pi}{6}$$
C
$$\frac{125 \pi}{12}$$
D
$$\frac{125 \pi}{4}$$
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