Select the number from among the given options that can replace the question mark (?) in the following series.
16, 35, ?, 217, 653, 1309
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 107.
Given series: 16, 35, ?, 217, 653, 1309
The series follows this pattern:
16 × 2 + 3 = 32 + 3 = 35
35 × 3 + 2 = 105 + 2 = 107
107 × 2 + 3 = 214 + 3 = 217
217 × 3 + 2 = 651 + 2 = 653
653 × 2 + 3 = 1306 + 3 = 1309
So, the missing term in the series is 107.