In sequencing problems one has to …. the total processing time or cost.

Answer

To solve the given question, we need to determine the correct term to fill in the blank regarding sequencing problems in operations research. The question states: "In sequencing problems one has to _____ the total processing time or cost."

### Step-by-Step Solution:

1. **Understand the Concept of Sequencing Problems**:
- Sequencing problems involve arranging jobs or tasks in a specific order to optimize certain criteria, such as time or cost.

2. **Identify the Goals of Sequencing**:
- The primary objectives in sequencing problems often include maximizing profit or minimizing time and cost.

3. **Determine the Correct Term**:
- Since the question specifically mentions "total processing time or cost," we need to focus on minimizing these factors.

4. **Fill in the Blank**:
- Therefore, the correct term to fill in the blank is "minimize." The complete statement would be: "In sequencing problems, one has to minimize the total processing time or cost."

### Final Answer:
In sequencing problems, one has to **minimize** the total processing time or cost.

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