The average run scored by a batsman in 20 innings is 32. after 21st innings , the man average becomes 34. how much runs does batsman score in his 21st innings ?

Answer

To solve the problem, we need to find out how many runs the batsman scored in his 21st innings based on the information given about his average runs.

### Step-by-Step Solution:

1. **Calculate the total runs scored in the first 20 innings:**
- The average runs scored by the batsman in 20 innings is 32.
- Total runs scored in 20 innings = Average × Number of innings
- Total runs = 32 × 20 = 640

2. **Calculate the total runs scored after 21 innings:**
- After the 21st innings, the average becomes 34.
- Total runs scored in 21 innings = Average × Number of innings
- Total runs = 34 × 21 = 714

3. **Calculate the runs scored in the 21st innings:**
- Runs scored in the 21st innings = Total runs after 21 innings - Total runs after 20 innings
- Runs in 21st innings = 714 - 640 = 74

### Final Answer:
The batsman scored **74 runs** in his 21st innings.

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