In an arithmetic progression, the 4th term is 14 and the 9th term is 29. What is the first term ?

Answer and explanation

Correct answer: A.

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  1. Step 1: Express the terms using the general formula for an arithmetic progression :
  2. Step 2: Subtract the first equation from the second to find the common difference :
  3. Step 3: Substitute back into the equation for to solve for :
Answer
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