If matches having zero runs and the one with highest runs is ignored, what will be the average runs for opener C?

Step 1: Extract C's data.
Total runs \(=414\), Highest \(=52\), 0's \(=2\).
Step 2: Adjust the total and the count of innings.
Remove the single "highest" innings: adjusted total \(= 414 - 52 = 362\).
Remove 0's and the one highest innings from 20 matches: counted innings \(= 20 - 2 - 1 = 17\).
Step 3: Compute the average.
Average \(= \dfrac{362}{17} = 21.2941\ldots \approx \boxed{21.29}\).