Maths · Arithmetic and Geometric progressions
Let be an A.P. for which and Find
Let \( a_{n} \) be an A.P. for which \( d=8 \) and \( a_{2}=12 . \) Find \( a_{1} \)
- A. 1
- B. 4
- C. 3 \)
- D. 2
Step-by-step solution
In an AP, a_2 = a_1 + d. Given d = 8 and a_2 = 12, so a_1 = a_2 - d = 12 - 8 = 4.
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