What is i^34?

A. -i
B. 1
C. -1
D. i

   C -1

calculate it from i and imaginary numbers

The answer is %2,4

Step-by-step explanation:

Residents can press on 10 different button choice when they enters the elevator. Number of components for the sample space for the event is

There are 8 different possibilities that 3 consecutive buttons are pressed those are:

-1,2,3

-2,3,4

-3,4,5

-4,5,6

-5,6,7

-6,7,8

-7,8,9

-8,9,10

When the pressing order doesn't matter, those buttons can be pressed 3 different ways for each possibility.

The probability is: