Answer and Explanation
Your Answer is
Correct Answer is A
Explanation
i=i, i²=-1, i³=-i, i4=1, i5=i... Every 4 cycles, because i+ i2+i3+i4=0, so the original formula =i{49}=i, So choose A.
Your Answer is
Correct Answer is A
Explanation
i=i, i²=-1, i³=-i, i4=1, i5=i... Every 4 cycles, because i+ i2+i3+i4=0, so the original formula =i{49}=i, So choose A.