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