Which of the following numbers will replace the question mark (?) in the given series?
11, 35, 69, 209, 417,?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e.1253.
The series follows this pattern:
11 × 3 + 2 = 33 + 2 = 35
35 × 2 - 1 = 70 - 1 = 69
69 × 3 + 2 = 207 + 2 = 209
209 × 2 - 1 = 418 - 1 = 417
417 × 3 + 2 = 1251 + 2 = 1253
So, the next term in the series is 1253.