A circuit consists of a resistor of 1 ohm in series with a parallel arrangement of resistors of 6 ohm and 3 ohm. Calculate the total resistance of the circuit. Draw a diagram of the arrangment.

Explanation

To solve the problem, we need to calculate the total resistance of a circuit that consists of a 1-ohm resistor in series with a parallel arrangement of a 6-ohm and a 3-ohm resistor. Let's break it down step by step.

### Step 1: Understand the Circuit Configuration
We have a circuit with:
- A 1-ohm resistor (R1) in series with
- A parallel arrangement of a 6-ohm resistor (R2) and a 3-ohm resistor (R3).

### Step 2: Draw the Circuit Diagram
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