A 3n + 5
B 5n + 3
C n + 5
D n + 3
Correct Answer: Option B
এখানে, ১ম পদ a = 8সাধারণ অন্তর d = (13 - 8) = 5
আমরা জানি,n তম পদ = a + (n - 1)d = 8 + (n - 1)5= 8 + 5n - 5= 5n + 3
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