The least positive integer $n$ which will reduce $\left( \frac{i - 1}{i + 1} \right)^n$ to a real number is

  • A
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $5$

Explore More

Similar Questions

The statement $(a + ib) < (c + id)$ is true for

The solution of the equation $|z| - z = 1 + 2i$ is

If $(x-iy)(3+5i)$ is the conjugate of $-6-24i$ (where $x, y \in R$ and $i=\sqrt{-1}$),then the values of $x$ and $y$ are respectively:

If $i = \sqrt{-1}$, then $[i^{18} + (\frac{1}{i})^{25}]^3 = $

If $\sum\limits_{k = 0}^{100} {{i^k}} = x + iy$,then the values of $x$ and $y$ are:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo