C-13-Q034mediumsingle_mcqThe nnn-th term of 8+11+14+17+⋯8 + 11 + 14 + 17 + \cdots8+11+14+17+⋯ is —a3n+53n + 53n+5b3n+83n + 83n+8c3n−13n - 13n−1d3n+23n + 23n+2ব্যাখ্যাWith a=8a = 8a=8 and d=3d = 3d=3, an=8+(n−1)⋅3=8+3n−3=3n+5a_n = 8 + (n-1)\cdot 3 = 8 + 3n - 3 = 3n + 5an=8+(n−1)⋅3=8+3n−3=3n+5.