Name the octant in which each of the following points lie.
(i)(1,2,3), (ii) (4,-2,3)
(4,-2,-5), (iv)(4,2,-5),

Explanation

To determine the octant in which each of the given points lies, we need to analyze the signs of the coordinates (x, y, z) for each point. The three-dimensional coordinate system is divided into eight octants based on the signs of the x, y, and z coordinates.

### Step-by-Step Solution:

1. **Identify the coordinates of the points:**
- Point (i): (1, 2, 3)
- Point (ii): (4, -2, 3)
- Point (iii): (4, -2, -5)
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