The probability of India winning a test match against West Indies is `1/2.` Assuming independence from match to match, find the probability that in a match series India’s second win occurs at the third test.

Explanation

To solve the problem, we need to find the probability that India's second win occurs at the third test match. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Understanding the Problem**:
We need to find the probability that India's second win occurs in the third match. This means that by the end of the third match, India should have won exactly 2 matches, with the second win happening in the third match.

2. **Possible Outcomes**:
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