A farmer harvests his crop and expresses his harvest in three different ways.
(a) I have harvested 10 quintals of wheat.
(b) I have harvested 10 quintals of wheat today in one acre of land.
(c) I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing. 
Do the above statements mean one and the same thing. If your answer is ‘yes', give reasons. And if your answer is ’no’ explain the meaning of each expression. 

Explanation

To determine whether the three statements made by the farmer mean the same thing, we need to analyze each statement in detail.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement (a)**: "I have harvested 10 quintals of wheat."
- This statement only provides the quantity of wheat harvested. It does not specify any information about the area of land used for cultivation or the time taken for the crop to grow.

2. **Statement (b)**: "I have harvested 10 quintals of wheat today in one acre of land."
- This statement includes two pieces of information: the quantity of wheat harvested (10 quintals) and the area of land used (1 acre). However, it still does not mention the time taken for the crop to grow.

3. **Statement (c)**: "I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing."
- This statement provides the most comprehensive information. It includes the quantity of wheat (10 quintals), the area of land (1 acre), and the time taken for the crop to grow (6 months after sowing).

4. **Comparison of Statements**:
- The first statement is limited to just the quantity of wheat harvested.
- The second statement adds the area of land, but still lacks information on the time factor.
- The third statement combines all three critical aspects: quantity, area, and time.

5. **Conclusion**:
- The three statements do not mean the same thing. Each statement provides different levels of detail about the harvest. The first is purely quantitative, the second adds spatial context, and the third includes a temporal aspect as well.

### Final Answer:
No, the above statements do not mean the same thing. Each statement provides different information regarding the harvest: quantity only, quantity with area, and quantity with area and time.

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