Find the position vector of the mid point of the vector joining the points P(2,4, -1) and Q(4, 2, 5).

Explanation

To find the position vector of the midpoint of the vector joining the points P(2, 4, -1) and Q(4, 2, 5), we can follow these steps:

### Step 1: Identify the coordinates of points P and Q
The coordinates of point P are given as \( P(2, 4, -1) \) and the coordinates of point Q are \( Q(4, 2, 5) \).

### Step 2: Write down the formula for the midpoint
The position vector of the midpoint \( R \) of the segment joining points \( P \) and \( Q \) can be calculated using the formula:
\[
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