In an arithmetic sequence, if the first term and the third term , the common difference is __________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to calculate the common difference in an arithmetic sequence when given non-consecutive terms. The given terms are and .
Key Concept Explanation
The common difference in an arithmetic sequence is the constant difference between any two consecutive terms. It can be calculated using the formula for any two terms and .
Step-by-step Solution
1. Identify the given terms: and
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