Select the number from among the given options that can replace the question mark (?) in the following series.
11, 13, 19, 49, 109, 239,?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 449.
Given series:11, 13, 19, 49, 109, 239,?
The logic used here is:
11 + (13 + 1) = 13
13 + (23 - 2) = 19
19 + (33 + 3) = 49
49 + (43 - 4) = 109
109 + (53 + 5) = 239
239 + (63 - 6) = 449
So, the next term in the series is 449.