Question

Given a positive integer n such that i^n=1, which of the following statements about n must be true?(Note: i^2=-1) *

Answer 1

Answer:

Any multiple of 4.

Step-by-step explanation:

If i^2=-1 then

(i^2)^(2n)=(-1)^(2n)

i^(4n)=1. {-ve no. to even powers are +ve}

Note : There are no statements to choose the true from.