Which term of the series 5, 8, 11, 14,.....is 320?
Options:
A . 104th
B . 105th
C . 106th
D . 64th
Answer: Option C Clearly, 5 + 3 = 8, 8 + 3 = 11, 11 + 3 = 14, ..... So, the series is an A.P. in which a - 5 and d = 3. Let 320 be the nth term of the series. Then, 320 = 5 + (n - 1) x 3 or (n - 1) = 105 or n = 106.
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