The first term of an arithmetic progression is 13 and the common difference is 4. Which of the following will be a term of this AP?

The first term of an arithmetic progression is 13 and the common difference is 4. Which of the following will be a term of this AP?

• A. 4003
• B. 10091
• C. 7881
• D. 13631

 

The correct answer is option C. 7881. Can you explain this answer in the comments?

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