A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
17, 27, 45, 71, ?, 147
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 105
17, 27, 45, 71, ?, 147
17 + 10 = 27
27 + 18 = 45; (10 + 8) = 18
45 + 26 = 71; (18 + 8) = 26
71 + 34 = 105; (26 + 8) = 34
105 + 42 = 147; (34 + 8) = 42
Hence, the correct answer is "105".